My sister is coming to visit me from the States and she wants to see some "geological points of interest" in Scotland. Does anyone have any ideas on some good places to visit to see some rock formations and the like? (I'd rather be in the pub myself, but this is her shout.) I'm located in the Central Belt, so some things in the southern half would be preferable to the northern half - but I'll take any suggestions I can get!
Thanks in advance!