Sign in

Mark Keating

@shadowcat-mdk.bsky.social
830 followers 1.1K following 1.6K posts

UK born Writer, photographer, dreamer, art lover, occasional rants, MD @ Shadowcat Systems. Father of 3 humans, and 1 pet, husband in training. Probably too many photo posts and random silliness. More at mdk.me.

PostsRepliesMedia
Mark Keating @shadowcat-mdk.bsky.social · 5h
Another photograph from my archives. This is from May/Jun 2026. Long exposure, four waterfalls walk, Bannau Brycheiniog. #Photo #Archive #Photography #DigitalCamera
Multi-tiered moss-covered waterfall tumbling into a shaded river, with rushing white water and sunlit green trees arching overhead.
090 9
Mark Keating @shadowcat-mdk.bsky.social · 14h
Another photograph from my archives. This is from July/August 2026. Looking north from Calander, Scotland. #Photo #Archive #Photography #DigitalCamera
Expansive highland valley with rolling green hills and distant mountains under a bright blue sky dotted with white clouds, a small farmhouse and winding track visible in the midground, and conifer trees framing the shaded foreground.
030 3
Mark Keating @shadowcat-mdk.bsky.social · 16/10/2026
Another photograph from my archives. This is from May/Jun 2026. Mist rising off Rydal water. #Photo #Archive #Photography #DigitalCamera
Early-morning river framed by foreground trees, thin mist rising from the water and sunlight illuminating layered, tree-covered hills with a small clump of pines on the distant ridge.
060 6
Mark Keating @shadowcat-mdk.bsky.social · 16/10/2026
Another photograph from my archives. This is from July/August 2026. Greenwich Observatory, early morning. #Photo #Archive #Photography #DigitalCamera
Historic hilltop observatory with a central tower topped by a red time ball and weather vane, flanked by domed telescope houses and trees, overlooking dry grassy slopes and open meadow.
020 2
Mark Keating @shadowcat-mdk.bsky.social · 16/10/2026
Another photograph from my archives. This is from July/August 2026. Cutty Sark from across the River Thames. #Photo #Archive #Photography #DigitalCamera
Three-masted tall ship’s complex rigging rising behind a lit riverside pier at dusk, with a glass-domed pavilion, trees and city buildings along a calm river.
020 2
Mark Keating @shadowcat-mdk.bsky.social · 15/10/2026
Another photograph from my archives. This is from May/Jun 2026. Looking out from Pen-y-Fan in Bannau Brycheiniog. #Photo #Archive #Photography #DigitalCamera
Sunlit hill ridge overlooking rolling green hills and patchwork farmland with a low sea of fog in the valleys, a dirt path along the ridge in the foreground, and a clear blue sky streaked with thin high clouds and contrails.
030 3
Mark Keating @shadowcat-mdk.bsky.social · 14/10/2026
Another photograph from my archives. This is from May/Jun 2026. Another image from the 4 waterfalls walk in South Wales. #Photo #Archive #Photography #DigitalCamera
A small multi-tiered waterfall cascading over moss-covered limestone ledges into a shallow pool, framed by steep rocky cliffs and dappled sunlight filtering through trees.
040 4
Mark Keating @shadowcat-mdk.bsky.social · 13/10/2026
Another photograph from my archives. This is from May/Jun 2026. Rydal cave above Rydal water (not in the photo). #Photo #Archive #Photography #DigitalCamera
Wide rocky cave entrance with a jagged, layered ceiling reflected in calm water and a line of flat stepping stones leading into the dark interior.
010 1
Mark Keating @shadowcat-mdk.bsky.social · 12/10/2026
Another photograph from my archives. This is from May/Jun 2026. Grisedale Forest walk. #Photo #Archive #Photography #DigitalCamera
Sunlit paved park path beside mown grass and dense green trees, with a bench and a tall conifer holding a large bird's nest against a bright blue sky.
030 3
Mark Keating @shadowcat-mdk.bsky.social · 08/10/2026
Another photograph from my archives. This is from May/Jun 2026. Bonnie wrapped in her wreath of weeds. #Photo #Archive #Photography #DigitalCamera
Wet brown-and-white dog sitting on pavement, holding a chewed green tennis ball in its mouth with grass tangled in its damp fur and looking eagerly at the camera.
040 4
Mark Keating @shadowcat-mdk.bsky.social · 07/10/2026
Another photograph from my archives. This is from May/Jun 2026. Looking out over the green below Grizedale Forest. #Photo #Archive #Photography #DigitalCamera
Dramatic band of low, textured clouds filling the sky above a rolling green valley and mixed woodland, highlighting bright meadows against darkening weather.
070 7
Mark Keating @shadowcat-mdk.bsky.social · 06/10/2026
Another photograph from my archives. This is from May/Jun 2026. Looking from Llandudno Pier towards the town. #Photo #Archive #Photography #DigitalCamera
Seaside promenade looking along a pebble beach toward a row of Victorian terraced hotels and crowds under a wide blue sky, with calm sea, a yellow boat near the shore and a blue-and-white railing in the foreground.
030 3
Mark Keating @shadowcat-mdk.bsky.social · 05/10/2026
Another photograph from my archives. This is from May/Jun 2026. Looking out from Loughrigg Fell towards the south. #Photo #Archive #Photography #DigitalCamera
Stone triangulation Trig Point pillar on a rocky summit foregrounding rolling green hills, valleys and distant mountain ridges beneath a vast clear blue sky.
050 5
Mark Keating @shadowcat-mdk.bsky.social · 05/10/2026
The trend of slop-mitigation rolls on as arXiv (formerly part of Cornell University) academic paper repo has started imposing submission limits after a doubling in the last two years and a four fold increase over the decade is overwhelming peer reviewrs. www.theregister.com/ai-and-ml/20...
040 4
Mark Keating @shadowcat-mdk.bsky.social · 04/10/2026
Another photograph from my archives. This is from May/Jun 2026. Are you trying to work? Bonnie doesn't want me to be doing that... #Photo #Archive #Photography #DigitalCamera
A brown Springer Spaniel dog lying upside down across a laptop keyboard, pressing its nose and wide eyes close to the camera as it playfully interrupts remote work.
020 2
Mark Keating @shadowcat-mdk.bsky.social · 04/10/2026
Close to my heart, it is World Space Week, this week. Last night in the UK we had clear skies and I personally sat up till the wee hours and imaged the M33 Galaxy (Triangulum) en.wikipedia.org/wiki/Triangu... www.un.org/en/observanc...
A face-on spiral galaxy with a bright yellowish core and faint blue star-forming arms, set against a dense field of distant stars on a dark background.
000 0
Mark Keating @shadowcat-mdk.bsky.social · 03/10/2026
Another photograph from my archives. This is from May/Jun 2026. Four waterfalls walk Bannau Brycheiniog. #Photo #Archive #Photography #DigitalCamera
Sunlight streaming through trees creates visible rays and mist over a two-tier waterfall spilling into a calm pool, with wet rocky foreground and small people standing near the base for scale.
050 5
Mark Keating @shadowcat-mdk.bsky.social · 02/10/2026
Another photograph from my archives. This is from May/Jun 2026. Looking down over South Wales towards Newport, Bannau Brycheiniog. #Photo #Archive #Photography #DigitalCamera
Sunlit morning over rolling green hills with a fog-filled valley and distant blue mountains beneath a pale sky streaked with wispy clouds and airplane contrails.
040 4
Mark Keating @shadowcat-mdk.bsky.social · 02/10/2026
76 years ago, 2nd October 1950, Peanuts first appeared in seven American newspapers. Still one of the most wonderful of American cultural contributions (IMO). schulzmuseum.org (schulzmuseum.org/timeline/#!/...)
Four-panel Peanuts strip: Charlie Brown hears others call him "Good ol' Charlie Brown," a friend echoes it while they sit together, and in the final panel he angrily mutters, "How I hate him!"
000 0
Mark Keating @shadowcat-mdk.bsky.social · 01/10/2026
Another photograph from my archives. This is from May/Jun 2026. Four Waterfalls Walk Bannau Brycheiniog. #Photo #Archive #Photography #DigitalCamera
Multi-tiered waterfall cascading over mossy rock ledges into a shallow pool set inside a sunlit, tree-lined limestone gorge.
0110 11
Mark Keating @shadowcat-mdk.bsky.social · 01/10/2026
Another photograph from my archives. This is from May/Jun 2026. Looking down from the Great Orme #Photo #Archive #Photography #DigitalCamera
Scenic coastal panorama showing a rocky headland jutting into calm blue sea, a coastal town to the right, and colorful cable-car gondolas crossing grassy hills in the foreground under a clear sky.
030 3
Mark Keating @shadowcat-mdk.bsky.social · 01/10/2026
Another photograph from my archives. This is from May/Jun 2026. Kiln near Austell St David. #Photo #Archive #Photography #DigitalCamera
Corner of a roofless stone ruin with weathered stacked stones and a narrow arched opening into a dark interior, small grasses and plants in wall crevices and a patch of daisies on the grassy floor.
020 2
Mark Keating @shadowcat-mdk.bsky.social · 01/10/2026
Another photograph from my archives. This is from May/Jun 2026. Tourists rowing across Pontcysyllte Aqueduct near Wrexham.#Photo #Archive #Photography #DigitalCamera
People in red canoes wearing life jackets paddle along a narrow elevated water channel on an aqueduct high above a green, tree‑covered river valley under low, cloudy skies.
020 2
Mark Keating @shadowcat-mdk.bsky.social · 30/09/2026
Another photograph from my archives. This is from Jul/Aug 2026. Samson's Stone, left on a hillside near Callender, Scotland during the last ice age. #Photography #PhotoArt #Art
Panoramic rural landscape with a large weathered boulder and shrubs in the foreground, patchwork green fields and wooded hills stretching across a valley beneath a wide, cloudy sky with a hint of blue.
040 4
Mark Keating @shadowcat-mdk.bsky.social · 30/09/2026
Another photo post from my archives (July-Aug 2026). A view looking down from London Bridge Observation Platform of a boat under the bridge and a tourist bus: #photo #archiveimages #cities #history #architecture
A view looking down from London Bridge Observation Platform of a boat under the bridge and a tourist bus
020 2
Mark Keating @shadowcat-mdk.bsky.social · 29/09/2026
Another photograph from my archives. This is from Jul/Aug 2026. Skyline taken from the roof of the Post Office Building, London. #Photography #PhotoArt #Art
Panoramic view of London’s financial skyline with clustered glass skyscrapers, construction cranes and the dome of St Paul’s Cathedral rising above treetopped foreground under a cloudy sky.
060 6
Mark Keating @shadowcat-mdk.bsky.social · 28/09/2026
Another photograph from my archives. This is from Jul/Aug 2026. Inside the free visual display, Outernet, above Tottenham Court Road Subway Station. #Photography #PhotoArt #Art
Visitors reclining and standing gaze up at a vast curved ceiling projection: a pastel gradient showered with sparkling light trails and tiny summer icons—ice cream cones, beach balls, sunflowers, watermelons.
051 5
Mark Keating @shadowcat-mdk.bsky.social · 27/09/2026
Another image from my Archive (July-Aug 2026). Loch Katrine and the tour boat. #Photo #Archive #Photography #DigitalCamera
Loch Katrine and the tour boat.
070 7
Mark Keating @shadowcat-mdk.bsky.social · 27/09/2026
Another photograph from my archives. This is from Jul/Aug 2026. Elaborate gold relief on Victoria's royal barge, Maritime Museum, Greenwich. #Photography #PhotoArt #Art
Lavishly gilded carved prow and figurehead of an ornate ceremonial boat, showing scrollwork, floral pilasters and a fish‑like creature, displayed indoors behind railings beneath a museum skylight.
090 9
Mark Keating @shadowcat-mdk.bsky.social · 27/09/2026
Another photograph from my archives. This is from Jul/Aug 2026. Standard touristyimage of Tower Bridge. #Photography #PhotoArt #Art
Tower Bridge spanning the Thames under an overcast sky, its ornate twin towers and blue suspension visible while people walk and take photos along the riverbank in the foreground.
070 7
Mark Keating @shadowcat-mdk.bsky.social · 26/09/2026
Another image from my Archive (July-Aug 2026). Cairn on the summit of the hill in Callender, Scotland. #Photo #Archive #Photography #DigitalCamera
Conical stone cairn commemorating Queen Victoria's Diamond Jubilee (plaque reads "Queen Victoria's Diamond Jubilee Cairn 1897") standing on a grassy hilltop with trees and distant hills beneath a bright blue sky.
020 2
Mark Keating @shadowcat-mdk.bsky.social · 26/09/2026
Another photograph from my archives. This is from Jul/Aug 2026. William Wallace statue on the front of a building at the bottom of Baker Street, Stirling. #Photography #PhotoArt #Art
Weathered stone statue of a medieval warrior atop a memorial arch, holding a sword and draped cloak, mounted on a curved sandstone building with carved floral reliefs and worn lettering.
060 6
Mark Keating @shadowcat-mdk.bsky.social · 25/09/2026
Another image from my Archive (July-Aug 2026). Bust depicting the Goddess Britanica in the Maritime Museum, Greenwich. #Photo #Archive #Photography #DigitalCamera
Bronze bust of a young woman with a calm, forward gaze and layered, wind-swept hair resembling jagged driftwood; her chest is etched with a DNA helix, displayed in a museum among plaster busts.
030 3
Mark Keating @shadowcat-mdk.bsky.social · 25/09/2026
Another photograph from my archives. This is from Jul/Aug 2026. Dolbadarn Castle nestled next to the lake in Llanberis. #Photography #PhotoArt #Art
Calm lake with small boats and people on a jetty in the foreground, a birch tree framing the scene, a ruined stone tower tucked in trees to the left, and steep rocky mountains rising under a clear blue sky.
030 3
Mark Keating @shadowcat-mdk.bsky.social · 24/09/2026
Another image from my Archive (July-Aug 2026). Parish Church, Callender, Scotland. #Photo #Archive #Photography #DigitalCamera
Church with a tall central spire and clock tower framed by trees, a banner over the entrance announcing a community event, and benches with a small group gathered on the front steps in a town square.
030 3
Mark Keating @shadowcat-mdk.bsky.social · 24/09/2026
Another photograph from my archives. This is from Jul/Aug 2026. Sunset over Llwyn-Onn Reservoir in Bannau Brycheiniog. #Photography #PhotoArt #Art
Sunset over a calm lake with the sun dipping behind a tree-covered ridge, warm orange sky and contrails reflected on the water, framed by dark leafy branches and a pebbled shoreline in the foreground.
091 9
Mark Keating @shadowcat-mdk.bsky.social · 23/09/2026
Another image from my Archive (July-Aug 2026). The front of the British Museum taken from the roof of the Post Office Building. #Photo #Archive #Photography #DigitalCamera
Neoclassical stone facade of British Museum with tall columns and a sculpted pediment, topped by a Union Jack on a flagpole and a carved stone statue, set against a large green glass-domed roof and surrounding city rooftops.
040 4
Mark Keating @shadowcat-mdk.bsky.social · 23/09/2026
Another photograph from my archives. This is from Jul/Aug 2026. Looking out over Llyn Padam with the Blade of the Giants sculpture in the foreground, mountains in the background. #Photography #PhotoArt #Art
A tall rusted metal sword sculpture mounted on a stone plinth beside a lake, framing distant green hills under a bright blue sky dotted with white clouds.
090 9
Mark Keating @shadowcat-mdk.bsky.social · 22/09/2026
Another photograph from my archives. This is from Jul/Aug 2026. Tiny Jaspanese sculpture from the exhibition at the British Museum. #Photography #PhotoArt #Art
Carved wooden figurine of two stylized human figures stacked vertically, each with exaggerated, grimacing faces and intertwined limbs, evoking a sense of burden and struggle as they climb over one another.
040 4
Mark Keating @shadowcat-mdk.bsky.social · 22/09/2026
Another image from my Archive (July-Aug 2026). The Old Prison, Stirling. #Photo #Archive #Photography #DigitalCamera
Large stone Victorian-era prison with battlemented towers and barred windows under a grey sky, set above a cobbled sloped driveway with a directional sign pointing toward the Stirling Old Town Jail attraction.
090 9
Mark Keating @shadowcat-mdk.bsky.social · 21/09/2026
Another image from my Archive (July-Aug 2026). Stained Glass windows in the Maritime Museum, Greenwich. #Photo #Archive #Photography #DigitalCamera
Stained Glass windows in the Maritime Museum, Greenwich.
050 5
Mark Keating @shadowcat-mdk.bsky.social · 21/09/2026
Another photograph from my archives. This is from Jul/Aug 2026. This is a masthead at the National Maritime Museum, Greenwich. #Photography #PhotoArt #Art
Smiling carved bulldog statue with exaggerated teeth and black nose, wearing a gold spiked collar and holding a decorated shield, mounted against a textured blue wall.
050 5
Mark Keating @shadowcat-mdk.bsky.social · 20/09/2026
Another image from my Archive (July-Aug 2026). Waterfall side view on the Four Waterfalls Walk in South Wales. #Photo #Archive #Photography #DigitalCamera
Waterfall side view on the Four Waterfalls Walk in South Wales.
070 7
Mark Keating @shadowcat-mdk.bsky.social · 20/09/2026
Giving me the morning "take me to the park" look.
Springer spaniel in portrait looking at the photographer with an expectant expression.
010 1
Mark Keating @shadowcat-mdk.bsky.social · 19/09/2026
Another image from my Archive (July-Aug 2026). Photo taken behind the waterfall on the 4 Waterfalls Walk.
Photo taken behind the waterfall on the 4 Waterfalls Walk.
010 1
Mark Keating @shadowcat-mdk.bsky.social · 19/09/2026
I call this the sporty-hiker where-did-you-hide-my-ball look:
Picture of a Springer Spaniel with a green baseball cap on sat in the footwell of a car, the dog is side-eyeing the camera
010 1
Mark Keating @shadowcat-mdk.bsky.social · 18/09/2026
Another image from my Archive (July-Aug 2026). The Foot Tunnel under the River Thames near Greenwich, London. #Photo #Archive #Photography #DigitalCamera
Foot tunnel under the river Thames
040 4
Mark Keating @shadowcat-mdk.bsky.social · 17/09/2026
Another photo post from my archives (July-Aug 2026). The view from the observatory at Greenwich: #photo #archiveimages #landscapes #cities
The view from the observatory at Greenwich
040 4
Mark Keating @shadowcat-mdk.bsky.social · 16/09/2026
Another image from my Archive (July-Aug 2026). Sir Wazlter Scott steam yacht on Loch Katrine. #Photo #Archive #Photography #DigitalCamera
A white passenger excursion boat cruising on a calm lake, decorated with colorful bunting and a red-striped canopy and carrying people on deck, with densely forested green hills rising behind it.
030 3
Mark Keating @shadowcat-mdk.bsky.social · 15/09/2026
Another image from my Archive (July-Aug 2026). Loch Katrine from the tour boat. #Photo #Archive #Photography #DigitalCamera
Loch Katrine
060 6