In this episode we explore deep time in an investigation into the geology and history of the Grey Mare’s Tail, a spectacular waterfall and nature reserve in Dumfries. Jenny looks into how creatures from 500 million years ago, found at the Grey Mare’s Tail, sent seismic waves through the geologic community. Annie uncovers a surreal tale of 17th century Covenanters seeking refuge and hiding at the Grey Mare’s Tail only to confront their worst nightmares. Also, a place of feral goats.