Park at the West Island Way car park at N55 44.824 W5 00.948, and pick up the path heading south.
The cache is an black turtle cache, hidden near to a tertiary dyke. This is one of the most interesting of the many intrusive dykes on Bute.
The Old Red Sandstone was laid down under a warm Devonian sea over 400 million years ago. (The red colour comes from iron oxide discolouring the grains.)
In the Tertiary period, around 65 million years ago, there were violent volcanic eruptions around Arran and molten lava forced its way up from the magma core through fissures in the sandstone. The extreme heat metamorphosed the sandstone, baking it white and producing a quartzite rock, harder than the black lava (basalt) and the surrounding sandstone. The basalt and the sandstone have eroded over the years leaving the metamorphic quartzite standing at a precarious angle.
This cache contains a domino 
