No flip flops, dress shoes, high heels or sandals are permitted when visiting the Scenic Caves in Collingwood, Ontario. There’s a good reason for this strict rule. The Scenic Caves attraction in Collingwood is a do-it-yourself walk through rocky terrain including slippery mud, snow, and ice. Yes, even in May there’s ice at the bottom of the huge crevices and caves. But oh, how wonderful it is to do something…