Mendenhall Glacier is located in the United States, Alaska, 13 km from Juneau. The 19-kilometer glacier "flows" from the Juneau ice field into the Mendenhall Valley and ends on the opposite side of the lake of the same name. The glacier is part of the Tongass National Reserve and is one of the most popular attractions in southeastern Alaska. The first name of the glacier is Oak, in 1892 it was renamed in honor of the American physicist and meteorologist Thomas Corvin Mendenhall, who conducted geodetic surveys in these places. As a result of climate change and an increase in average daily air temperature, the Mendenhall Glacier is gradually decreasing. As a result of melting, underwater caves are formed in it, meltwater washed cracks in centuries-old ice blocks, forming maze passages. They can be very narrow or turn into real galleries, the depth and length of which sometimes reaches several hundred meters. The fantastic beauty of the caves of the Mendenhall Glacier attracts many tourists and photographers from around the world. In addition to the glacier itself, visitors can see the lake with icebergs floating in it, meet with wildlife, see the black bears, porcupines, beavers and waterfowl living in these places. Some lucky ones manage to spy on a bear hunting for salmon. The exposition of the Mendenhall Visitor Center, founded in 1962, introduces the history of the Mendenhall Glacier and the nature of Alaska. The center has developed educational programs for children and adults, organized interesting tourist routes, exhibitions, lectures and audio-visual presentations are held.