iiinova — where your digital self keeps evolving

I found the original image, still out there ...

Old image from BBC Bitesize, wrongly identifying the rock that underlies Edinburgh's Royal Mile as limestone. It is in fact sandstone and mudstone.

May I rant? I complained years ago about incorrect information on BBC Bitesize (a learning resource). They said the info was archived and couldn't be updated when things changed (it was wrong to start with). Now they've redrawn the diagram with same error ... www.bbc.co.uk/bitesize/gui...

Extract from BBC Bitesize website showing the development of a crag and tail, using Edinburgh Castle as an example. The image suggests there is limestone in the tail, which is wrong.

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Angus Miller @geowalks.scot · 17/09/2026

Cracking day in the North West Highlands UNESCO Global Geopark on a GeoWorld Travel geology tour of Scotland. Unbeatable geology, bearable weather!

Group of geologists examine a cliff of rock at the Multi-coloured Rock Stop in the North West Highlands UNESCO Global Geopark.

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Angus Miller @geowalks.scot · 13/09/2026

Walking the #kiltwalk dressed as a Womble. Surely that deserves a donation to @greenteamedin.bsky.social ?? www.justgiving.com/fundraising/...

A man dressed as a Womble picking up litter.

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Angus Miller @geowalks.scot · 02/09/2026

Are you starting to plan for the autumn? Great news, the Centre for Open Learning at Edinburgh University have restarted our introductory, in-person geology courses this term, taught by me and Fiona McGibbon. col.ed.ac.uk/lifelong-lea...

A woman stands on a flat lying sedimentary rock platform with a cliff of layered rock behind.

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Angus Miller @geowalks.scot · 21/07/2026

A magical day in the company of Joanna Kessel & Helen Bodycomb, on final day of their deep time mosaics workshop in Edinburgh. The participants made a stunning range of beautiful and thought-provoking mosaics in stone and other materials, in celebration of the Tercentenary of James Hutton's birth.

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Angus Miller @geowalks.scot · 20/07/2026

The hill(s) I will die on. Arthur's Seat & Salisbury Crags are separate hills. Separate geologically, topographically and on Ordnance Survey maps. Yesterday's fire was on the slopes of Salisbury Crags. Many news sources, the fire service & even Historic Environment Scotland have got this wrong!

Snip of Ordnance Survey map of Holyrood Park in Edinburgh, showing that Arthur's Seat and Salisbury Crags are separate hills.

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Angus Miller @geowalks.scot · 14/06/2026

Happy (other) birthday to James Hutton, born on this day, 14th June 1726, in the calendar used in most of Europe at the time. During Hutton's life, Britain caught up by missing 11 days of 1752. Nice to be following in his footsteps today, exploring the granite boundary in northern hills of Arran.

View of the granite mountains of North Arran, including the notched ridge of Ceum na Caillich, the Witch's Step.

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Angus Miller @geowalks.scot · 03/06/2026

Nice to get Siccar Point to myself for a change, where are you all? Happy birthday Dr Hutton, 300 years old today. #HuttonTercentenary

Angus Miller at the Siccar Point Deep Time Trail, sitting in the stone viewpoint structure. A carved sandstone block has a quotation from John Playfair 1788 "the mind seemed to grow giddy by looking so far into the abyss of time".

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Angus Miller @geowalks.scot · 02/06/2026

Anyone got any candles? I only need 300.

Layered cake with squashed and folded chocolate cake and slab of layered light coloured cake on top.

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Angus Miller @geowalks.scot · 29/05/2026

Drinking whisky as the moon rises at Siccar Point. A special place and a story well told. Good night!

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Angus Miller @geowalks.scot · 29/05/2026

A beautiful day! My life has been dominated for the last year by building the Deep Time Trail at Siccar Point to celebrate James Hutton's 300th birthday. Formal launch of the trail is today, it is looking great, and I'm mightily proud of what has been achieved. james-hutton.org/deep-time-tr...

The new viewpoint structure at Siccar Point, constructed from local stone and containing a carved sandstone block with a quote from John Playfair "The mind seemed to grow giddy by looking so far into the abyss of time".

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Angus Miller @geowalks.scot · 09/05/2026

Terrible photo from the bus but my first look at the geology/deep time takeover of the Royal Scottish Academy on Princes Street, Edinburgh. I'm looking forward to exploring the hundreds of artworks. I'm expecting rocks. Lots of 'em!

Front pillars of the RSA with colourful banners advertising the 200th Annual Exhibition.

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Angus Miller @geowalks.scot · 27/04/2026

Happy days! I arrived on Holyrood Road this morning to overhear a tour guide (with a non-specialist tour group) talking at length, authoritatively and correctly about James Hutton and the geology of Edinburgh. And the group were engaged in a story well told. My work here is done!

Geology panels outside Dynamic Earth in Edinburgh with Salisbury Crags behind.

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Angus Miller @geowalks.scot · 15/03/2026

This winter I've been immersed in developing the Deep Time Trail at Siccar Point. A lot of work, but it is really starting to come together, and on schedule to complete in time to celebrate James Hutton's 300th birthday in June. You can find out more at james-hutton.org/deep-time-tr...

Stone wall under construction including a carved quote stone that reads "in nature there is wisdom, system and consistency. James Hutton 1788"

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Angus Miller @geowalks.scot · 07/11/2025

Would someone like to donate £98 and give a nice round end to a good week? www.crowdfunder.co.uk/p/siccar-point

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Angus Miller @geowalks.scot · 22/09/2025

Or all of them, packaged in a modest but attractive purple box! (If for example you don't have the wall space to display all 29 drawings.)

Complete set of the Hutton Lost Drawings rolled and packaged in a purple cardboard storage box.

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Angus Miller @geowalks.scot · 19/08/2025

We are really having a lot of fun exploring glorious Holyrood Park in the company of Isabella and James Hutton, in our most excellent @edfringe.bsky.social walking theatre. Come join us, every day (except Wednesday) until Monday 25th, starts 11am near Pollock Halls. www.edfringe.com/tickets/what...

Actors playing Isabella Hutton (Jane Westhead) and James Hutton (Billy Quain) in Holyrood Park, Edinburgh with Arthur's Seat in the background.

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Angus Miller @geowalks.scot · 16/08/2025

All good to go for our Hutton in Edinburgh Fringe show, all I need now is some actors and and audience ... www.edfringe.com/tickets/what...

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Angus Miller @geowalks.scot · 16/08/2025

All good to go for our Hutton in Edinburgh Fringe show, all I need now is some actors and and audience ... www.edfringe.com/tickets/what...

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Angus Miller @geowalks.scot · 07/08/2025

That sound? The really faint one you just heard? That, my friends, is the sound of a plan coming together. The prototype Lost Drawings postage/storage box, coming to a Crowdfunder near you on 15th September! More soon ...

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Angus Miller @geowalks.scot · 05/08/2025

It's Fringe time! You might need some Edinburgh geology. Join our immersive walking theatre shows in the footsteps of Charles Darwin and James Hutton. 16-25 August (not 20th), Hutton 11:00 and Darwin 14:00 www.edfringe.com/tickets/what... www.edfringe.com/tickets/what... Photo: Prof Joe Goldblatt.

Actors playing Isabella and James Hutton in Holyrood Park, in the "Hutton in Edinburgh" Fringe show.

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Angus Miller @geowalks.scot · 19/07/2025

Looking forward to the next level where AI creates memes about how AI doesn't understand memes ...

Meta AI does a very poor job at explaining a Coldplay kisscam meme.

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Angus Miller @geowalks.scot · 17/07/2025

I am so privileged to visit Siccar Point again and again (third time this week) and see it in different moods, and in the company of geologists and non-geologists all of whom see different aspects of this unique and special place. Just needs an ice cream van or gift shop for scale, don't you think?

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Angus Miller @geowalks.scot · 10/06/2025

Another lovely geology day in the Hebrides. An Sgùrr on Eigg is magic combination of a highly satisfying walk, amazing scenery and a cracking geological detective story (complete with smoking gun).

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Angus Miller @geowalks.scot · 10/06/2025

Hello, old friend you are looking good!

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Angus Miller @geowalks.scot · 22/05/2025

Siccar Point looking good today. Beautiful light, big surf.

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Angus Miller @geowalks.scot · 21/05/2025

Home from a stunningly fabulous geology trip to Shetland. If you've never been, go. I recommend choosing a sunny week ...

Mousa Broch, Shetland. Constructed of local Old Red Sandstone.

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Angus Miller @geowalks.scot · 14/05/2025

Visiting Shetland for the next week. I guess we'll cope ...

Weather forecast for Shetland, 7 days of sunshine

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Angus Miller @geowalks.scot · 05/05/2025

Join me for a guided walk to Siccar Point on Saturday 10 May, 10:45. A beautiful section of Scotland's coast that has played a crucial role in development of ideas about how the world works. geowalks.scot/guided-walks/

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Angus Miller @geowalks.scot · 15/04/2025

Enthusiastic crowd on the beach today exploring Edinburgh's geology. We've got four Edinburgh Geological Society events this week for Edinburgh Science Festival - edinburghgeolsoc.org/science-fest...

Children exploring Wardie Bay, Edinburgh with rocks and buildings in the background.

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Angus Miller @geowalks.scot · 08/04/2025

I had a great time last week exploring the south coast of the Ross of Mull with a Geowalks group. Stunning weather & beautiful rock: Moine metamorphic rock that is superbly exposed, the layering is mostly vertical and runs out to see, creating a varied coastline of steep-sided ridges and sandy bays.

Ridges and islands of Moine metamorphic rock, looking out to sea on the south coast of the Ross of Mull, Isle of Mull, Scotland.

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Angus Miller @geowalks.scot · 25/03/2025

Tree vs rock. Blackford Hill, Edinburgh

A cliff of andesite rock with a sycamore tree growing on it, roots finding the cracks in the rock. Blackford Hill, Edinburgh

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Angus Miller @geowalks.scot · 21/03/2025

I had a lovely couple of days this week with students and staff visiting from Dennison University in Ohio. Enthusiastic students who got a huge amount from a spring break trip to sunny Scotland.

Student group exploring the unconformity surface at James Hutton's famous Siccar Point unconformity.

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Angus Miller @geowalks.scot · 08/03/2025

Fife geology just keeps giving. Newly exposed vent margin at Earlsferry, beautiful fresh rock and very messy!

Volcanic vent margin: mashed up sandstone next to fluidised mudstone.

Volcanic breccia with network of parallel calcite veins.

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Angus Miller @geowalks.scot · 06/03/2025

Here's the sunshine geology photo of the day that you've all been waiting for. When the sun and the tide are out, the Fife coast is pretty unbeatable for geological variety. Off to lie down after all this excitement!

View across the Firth of Forth from near Ardross Castle, St Monans, Fife. In the foreground a plunging syncline in Carboniferous sedimentary rocks is pierced by a small basalt intrusion.

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Angus Miller @geowalks.scot · 06/03/2025

One of my group spotted a typo though! But a nice one, for ever more he shall be referred to as Brian 'the Brain' Upton!

Close view of the acknowledgement to Professor 'Brain' Upton

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Angus Miller @geowalks.scot · 06/03/2025

Hey @gernon.bsky.social your St Monans board is still looking great!

Information board on the Fife Coastal Path in St Monans, telling the story of the volcanic vent.

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Angus Miller @geowalks.scot · 06/03/2025

Sun's out this morning and we're off to explore another section of beautiful Fife coast. Here's yesterday, might have been grey but the geology was shiny!

Group of people huddle beneath a cliff of sedimentary rock, eating lunch. South of Kings barns, Fife

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Angus Miller @geowalks.scot · 27/01/2025

Hello Edinburgh, I've missed you! After 5 weeks in the Caribbean, today was a bit of a shock to the system but I enjoyed sharing the geographies of Holyrood Park with Heriot Watt students.

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Angus Miller @geowalks.scot · 20/12/2024

How's your weather looking for the weekend? Bit boring here 😁.

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Angus Miller @geowalks.scot · 17/12/2024

An empty to-do list, old diary filed away. Could it be, could it possibly be, that's a wrap for 2024? A full 25 minutes ahead of schedule?

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Angus Miller @geowalks.scot · 13/12/2024

Found 'em! There's a stack of Lost Drawings on my sofa, the parts are slotting into place for a big project next year. And if you don't know what the Lost Drawings are, don't worry you are going to hear a lot about them in 2025 and 2026!

Stack of paper drawings wrapped in torn brown paper.

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Angus Miller @geowalks.scot · 29/11/2024

Grim reality setting in now. Today's journey has been very smooth, but we'd have arrived an hour ago with an ICE. Now on fourth (and final?) charge, with 90 miles to go. Mind you, we're going to my mother-in-law's, maybe I'd rather be sitting in a dark car park in the rain 😁.

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Angus Miller @geowalks.scot · 29/11/2024

How far can you get before you need to stop and charge? It depends! Almost entirely on road speed (or speed relative to the air: headwinds are a pig). Motorway speeds drain a battery fast, definitely a tortoise and hare situation! On slow roads we can easily do 150 miles. Otherwise, maybe 80.

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Angus Miller @geowalks.scot · 29/11/2024

One other big barrier is it would be very difficult to do a journey like this solo. A navigator is pretty essential to find chargers, keep an eye on distances and tell the driver when they need to slow down to conserve charge (we'll come back to that!). Will get easier as more chargers come online.

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Angus Miller @geowalks.scot · 29/11/2024

ICE = internal combustion engine. The important acronyms though are Chademo and CCS, two types of rapid (journey) charging. Doesn't matter what they stand for (ok I don't know) but think VHS and Betamax. We are on the wrong side of this one, Chademo chargers are less common and going out of fashion.

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Angus Miller @geowalks.scot · 29/11/2024

I'm making it all sound rosy, eh? But journeys like this take way longer than an ICE would. About one-third of our time is spent charging. Not always at pretty places (although we've a strange affection for this place and it's wooden cowboy). And our battery is now hot, which slows down charging.

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Angus Miller @geowalks.scot · 29/11/2024

The future of charging provision is actually already here. Soon every stopping place will want to have a bank of chargers like this. Provide enough reliable chargers and customers stop and spend money.

Bank of four rapid chargers in the sunshine.

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