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Mark’s exploring on a beach near Kirkcaldy in the company of geologists Angus Miller and Katie Strang, organisers of the current Scottish Geology Festival.

The 90th anniversary of the evacuation of St Kilda took place earlier this week, Mark and Euan look back at a trip they made to the island in search of the St Kilda ‘hidey holes’.

Mark and Euan come face to face with a fish not called Wanda but Cedric at Macduff Aquarium.

Adventurer Calum Maclean tells us about the challenge he undertook with Jenny Graham to walk the longest straight line in the UK.

Mark visits Dollar Glen to find out why the tradition of hammering coins into trees can cause serious harm.

Stuart Younie of Mountaineering Scotland gives advice on the best navigational aids to use whilst out on the mountains.

Plus the intricacies of a spider’s web and the eerie qualities of a descending mist.