Sapphire Pool still had its biscuit-like geyserite formations made famous by the photography of F. Jay Haynes, but Black Diamond Pool apparently didn’t exist.

Footage shows a small eruption from Black Diamond Pool in the Biscuit Basin subbasin of Upper Geyser Basin, Yellowstone National Park, on May 31. The pool was the site of a dangerous explosion ...

The new webcam was established at Biscut Basin only a few weeks before track activity at the Black Diamond Pool. The camera is designed to capture static images every 15 minutes, which are then ...

On May 31 at 8:39 p.m. MDT a small eruption occurred at Black Diamond Pool in Biscuit Basin, site of a hydrothermal explosion last summer. The event was recorded by a new webcam installed earlier ...

“Small eruption from Black Diamond Pool, site of a hydrothermal explosion on July 23, 2024, captured by new webcam on May 31 at 8:39 p.m. MDT!” ...

This is an aerial view of Black Opal Pool, Black Diamond Pool, and part of Wall Pool, all in Biscuit Basin, Yellowstone National Park, taken in 1959 sometime after the Hebgen Lake earthquake ...

On the morning of July 23, 2024, visitors to Biscuit Basin, about 2 miles northeast of Old Faithful Geyser, had to scramble for safety as a hydrothermal explosion occurred from Black Diamond Pool ...

USGS said the webcam was set up "on May 14, 2025, for the purpose of monitoring the pool and better understanding the nature of post-explosion activity." In a social media post, USGS Volcanoes ...

“Small eruption from Black Diamond Pool, site of a hydrothermal explosion on July 23, 2024, captured by new webcam on May 31 at 8:39 p.m. MDT!” ...

VIDEO: New webcam at Yellowstone National Park records 'small' eruption from Black Diamond Pool ... Updated: 10:00 PM EDT Jun 3, 2025 Editorial Standards ⓘ Jeff Stitt ...