The U.S. National Park Service has an important message for visitors: Leave your drones at home!
Unmanned aircraft were officially banned from U.S. national parks in June 2014. But just last week, on Aug. 2, an unidentified tourist crashed a drone straight into the famous rainbow-colored Grand Prismatic Spring at Yellowstone National Park in Wyoming.
Park officials have yet to recover the drone, and have not determined if the crash caused any damage to the site, but an investigation into the matter is ongoing, Amy Bartlett, a park spokesperson, told Live Science. [See photos of Yellowstone's Grand Prismatic hot spring]
Grand Prismatic is named for its colorful algae mat, which circles the spring in shades of red, orange, yellow and green.
"It's a hugely popular, photographic hot spring in Yellowstone," said Bartlett, who also noted that, while park officials aren't yet certain, the tourist was likely flying the drone over the hot spring to capture an image or video.
Park officials haven't yet recovered the downed drone from Grand Prismatic, partly because they have not determined where the vehicles landed in the spring, Bartlett said. Measuring more than 300 feet (91 meters) across and reaching depths of 160 feet (49 m), the hot spring is the largest in the United States, and the third largest in the world.