David Erwin and Philip Doughty (Geologist) explore Fermanagh's caves and clues from the past which can be found within the rocks.
Set in "the extreme west of Northern Ireland", Fermanagh has long been a place of importance for geologists. Visiting Florence Court, the third Earl of Enniskillen was a "geologist in his own right" and created the finest geological collection in the world, at that time. From here, both Erwin and Doughty set off to examine the ancient coral reefs on nearby land.
The corals found indicate past tropical temperatures, with the pigmentation on the shell being past remnants of colour, now only seen in other parts of the world. Next, there is excitement as Erwin breaks open a rock to find fossilised corals to which Doughty exclaims "do you realise you've shown that to the daylight for the first time in 30 million years, and just been revealed today - now - this minute"!
Following the streams of water through forestry and examining present insect life along the way, we are brought to rocky territory. Here, the effect of water on rock is explained with this being highlighted further when climbing through the Marble Arch Caves and the deterioration of the limestone within is seen.