Eisriesenwelt is a stunning ice cave located near Werfen, Austria. It is one of the largest ice caves in the world, stretching over 42 kilometers (26 miles) in length. The cave features impressive ice formations, including massive ice columns and frozen waterfalls, created by the unique climate and geological conditions of the region. Visitors can explore the cave through guided tours, which typically last about 75 minutes. The entrance is situated at an elevation of 1,640 meters (5,380 feet) and requires a short hike or a cable car ride from the valley below. The cave remains icy year-round, making it a popular destination for tourists.