I was on Thark ridge, having carried a spare container for maintenance if needed.
Anyway I was walking away from the Thark ridge cache and noticed there was a hole in the map. So to make a certain geocacher I know's day I thought I would put a cache in the hole. I know I will get a phone call to say "For Thark's Sake why did you do that". Thus the name of the cache.
I hope you enjoy the walk along Thark Ridge. The return walk should take you about an hour and a half. Beware of snakes of course