Located in Jasper National Park, Alberta, Canada, Medicine Lake looks at first glance like a normal lake, but in fact, it isn’t actually a lake. During the summer months, Maligne River carries a lot of meltwater and starts to back up in this area. In fall and winter, Medicine Lake disappears all of a sudden. As there is no visible channel for draining the lake, the question, however, is, where does the water go? The answer is that there are many sinkholes in┬áthis area. In summer, when there is too much meltwater, the sinkholes can’t handle the amount of water and so it starts to dam up. In fall and winter Medicine Lake drains out as Maligne River isn’t carrying meltwater anymore and so the sinkholes can handle its volume of water again.

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