Some whiny alt-rock crap that was way popular about 8 years ago or so, with a chorus I always mis-hear as "the Burgess Shale".

I thought of you on the weekend, we were studying a satellite photo of Lake Simcoe (where our cottage is) and points north, i.e. Muskoka (on the eastern shore of Lake Huron), which is all wrinkled up like elephant skin -- what causes the swirly bits?