This is the Devils pul pit near Glasgow, it is part of the Finnich glen which is a deep narrow gorge where my parents used to bring me as a child.
Some may recognise it as the liars spring from Outlander where Claire drinks from it and then finds out that if you lie it will burn your insides, It apparently gets its name from the story that the Devil himself preached to his followers from a large rock and that the water runs red in colour and there are also other stories of Witches and Druids. You access it by climbing down an old stone staircase known as Jacob's ladder or the Devils Steps but be careful as the stones are worn and slippery and remember that if you decide to have a drink to quench your thirst then don't tell a lie!!!
