A US photographer has captured the moment a young elk butted heads with another photographer, facing off in a potentially deadly encounter.
While taking photos in the Great Smoky Mountains National Park in North Carolina, Vince M Camiolo spotted a young bull getting up close and personal with a fellow photographer.
"The elk became more interested in making trouble than simply the scent of the camera," Mr Camiolo wrote on his YouTube upload of the event.
"He started physically harassing the photographer, escalating to full on head-butts."
The video shows the elk's horns getting awfully close to piercing the stranded photographer, who remains prone on the ground during the incident.
In an email to Mr Camiolo, the unnamed photographer said he hoped being passive to the elk would "see him pass on".
"I think that while protecting myself with my head down, having my head down was a signal that I was rutting with him," the photographer wrote.
"I was concerned at first, but when he started rearing back and lunging at me later on, I got scared and pissed off."
In the video the photographer eventually stands up to remove himself from the situation, and a motorist comes close to provide refuge.
"I've joked with my friends that at least he took me for a buck and not a cow (female elk)," the photographer said.
Source: YouTube/Vince M. Camiolo
Author: Jack Hawke, Approving editor: Nick Pearson