Lakes, rivers and waterfalls offer some spectacular hiking opportunities, particularly during the summer, but don't make the same mistake as this hiker at Yellowstone National Park, who discovered the hard way just how slippery wet rocks can be.
In a video shared this week via Instagram account TouronsOfYellowstone (which you can see below), a woman can be seen slowly sliding down a slick bank into a lake, unable to grip anything to stop her descent. It's not clear why she wandered onto the wet stone, but with only flip-flops for footwear, she is unable to get any purchase on the slippery ground (our guide can you go hiking in flip-flops explains why this is a bad idea).
