An 83-year-old woman was gored by a bison on June 1 in Yellowstone National Park. The incident occurred near the Storm Point Trail at Yellowstone Lake. Park officials say the bison was “defending its space” when it “lifted her about a foot off the ground with its horns,” according to a news release. 

The woman was seriously injured. She was initially brought to the Lake Medical Clinic before being transported by helicopter to Eastern Idaho Regional Medical Center. There is currently no more information concerning her injuries or status, and park officials continue to investigate the incident.

This isn’t the first time a bison has attacked someone visiting Yellowstone. Last year, a 47-year-old woman was injured after being charged and gored by one. In fact, according to the National Park Service (NPS), bison have injured more people in Yellowstone than any other animal. While naturally nonaggressive, if they feel threatened, they will defend their space and can run three times faster than humans.

“When an animal is near a campsite, trail, boardwalk, parking lot or in a developed area, give it space,” cautioned NPS. “It is your responsibility to stay more than 25 yards away from all large animals – bison, elk, bighorn sheep, deer, moose, and coyotes – and at least 100 yards (91 m) away from bears and wolves. If need be, move or turn around and go the other way to avoid interacting with a wild animal in close proximity.”