An increase in the bear population has tourists taking lots of pictures, and park officials taking extra precautions.

Officials with Great Smoky Mountains National Park have closed five back-country campsites this month due to the presence of aggressive bears.

They said there are more bears than normal this spring, and they're coming closer to campers and tourists.

Cade's Cove has become "bear-central."

"This is the place to come and see them, that's for sure," said park visitor Brian Swartz. "This makes four we've seen today. We came in last night and saw five between 3:30 and 5:30."

"We saw a mother bear and two cubs, and they were all sleeping up in a tree," said visitor Beth Cook.

While the commotion is fairly common this time of year, the difference seems to be the number of bears to see.