WATCH: Two tourists were filmed illegally walking along the edge of Yellowstone’s Grand Prismatic Spring after leaving the designated boardwalk, violating Natio

WATCH: Two tourists were filmed illegally walking along the edge of Yellowstone’s Grand Prismatic Spring after leaving the designated boardwalk, violating National Park Service rules. [▻](https://video.twimg.com/amplify_video/2079959816680710146/vid/avc1/720x1280/Rbw-DFdKh96yJ_Re.mp4)