Within Alberta’s Jasper National Park exists a lake so mysterious that you may never find it. The reason? Every winter, its water completely disappears. If you’re guessing evaporation, think again: the water drains from the bottom as if it were a gigantic bathtub. Medicine Lake is in fact a four-mile-long, 100-foot-deep flood caused when melting glaciers from the surrounding mountains meet with the Maligne River. Photo courtesy of mintnotion on Instagram.