The epicenter of the magnitude-6 Yellowstone National Park earthquake on June 30, 1975 (a Monday!), was located along the north-central boundary of Yellowstone Caldera, a few kilometers (miles) southeast of Norris Geyser Basin.

It's only mid-June, but wildfire conditions are creeping up in some areas of the National Park System, with Voyageurs National Park issuing a ban on wood or charcoal fires and Yellowstone National Park warning visitors of moderate fire danger.

Rangers are searching for two men seen harassing a bison calf in Grand Teton National Park.

Visitors to Yellowstone National Park are taking a toll on the park's wildlife, where in recent days two black bears have been killed by motorists, an elk and a bison were also hit by vehicles, a newborn elk calf was picked up by motorists concerned for its fate, and a bison calf had to be put down after a visitor tried to help it out of the Lamar River so it could catch up with its mother.