Shocking video shows a bison dragging and thrashing a woman in a South Dakota state park after she reportedly got too close to a calf, as thousands have traveled to the state for an annual motorcycle rally, according to multiple reports.

Footage of the Wednesday attack, captured by witness Jo Reed, shows the bison taking hold of the woman and dragging her across the street into the grass.

The animal continues to violently shake and spin the woman as other bikers look on in horror, the video shows. The animal ripped off her pants before running off as onlookers describe the woman as being unconscious.

An estimated 500 bison were blocking the roadway within Custer State Park when the motorcyclist “got too close,” the Custer County Chronicle reported.

WILDLIFE OFFICERS SEARCH FOR ELK WITH TIRE AROUND ITS NECK

The Daily Mail identified the woman as a 54-year-old from Iowa.

(Jo Reed via TMX.news)

(Jo Reed via TMX.news)

Thousands have flocked to the state over the past week and a half for the 80th Annual Sturgis Motorcycle Rally, a 10-day event in Sturgis.

THOUSANDS OF BIKERS HEADING TO SOUTH DAKOTA RALLY TO BE BLOCKED AT TRIBAL LAND CHECKPOINTS

Reed later wrote on Facebook that herds of bison “were everywhere we went,” and had appeared to be “frisky” and “punchy with each other.”

“We came around a curve just behind a group of motorcyclists and there was a herd standing in the middle of the road, most noticeably a cow (female) and her calf which was nursing,” Reed wrote. “Initially one woman got off her bike and approached the herd and then more followed. It was a tense moment.”

CLICK HERE TO GET THE FOX NEWS APP

According to the Chronicle, the victim suffered injuries that were considered not to be serious and was flown to an area hospital.

Fox News’ Danielle Wallace contributed to this report.