Join geologist Dr John Flett Brown on the classic Orkney walk along the West Shore of Stromness in this new film made by Mark Jenkins.

Starting from the Point of Ness, with views across Hoy Sound to Graemsay and Hoy, the journey begins with a fossil beach on the shore of ancient Lake Orcadie, the great lake from which today’s Orkney rocks began their story as sediments.

As we walk on, the record of the rocks and their eras unfolds, layer by layer, following the story of the lake and the rivers that flowed into it, and times of warmer weather when the margins dried out and mudcracks formed; with discoveries like salt crystals or the mark of raindrops from 380 million years ago.

This online event is free and will be streamed through the Science Festival’s YouTube channel, through a link which will be posted up here in advance.