For a single photo, they risked far more than they likely realized: Two tourists were filmed walking on fragile ground around Yellowstone’s Grand Prismatic Spring, where a fall into the scalding water could prove fatal

A witness said she stopped in her tracks when she spotted the women near the massive hot spring, whose center of the pool reaches 188° F.

For a single photo, they risked far more than they likely realized: Two tourists were filmed walking on fragile ground around Yellowstone’s Grand Prismatic Spring, where a fall…