An interesting discovery was made at the Koyukuk River. A group of professors from the University of Virginia were on a float down the river.

The professor was able to take a picture of the moment.

Climate impacts on places of cultural and ecological significance are being worked on by a group from the University of Virginia. We were taken on a float down the Koyukuk River. Karen McGlathery was able to spot the tusk when the river was high and flowing quickly.

The post about the tusk became an instant hit with more than 1,200 comments when it was shared on the website.

The chair of the environmental science department at the University of Virginia was on the research trip.

The idea of the arctic as a sanctuary is what is being studied. The mammoth tusk was pointed out to us during a river float trip. It's incredible. The mammoth was one of the many animals that lived in the area during the last ice age. It's not surprising that you'll see it, but it's even better to see it in person.

Interior Alaska was unglaciated during the last ice age, according to the director of the University of Alaska Museum of the North.

He said that it was a great place to live. There is an abundance of ice age mammal remains in this area.

If he were to get the tusk, he would work with the state archaeologist.

He said that if it fell out, the right thing to do was to get it to the museum.

The professors did not forget the amazing sight of the mammoth.

It was really arresting to see the exposed mammoth tusk. Climate change and extinction are in one image.