The Aara Gorge is located in Switzerland, in the Bernese Alps, in the Hasli Valley, which extends from the Grimsel Pass to Lake Brents. The gorge is located between the towns of Innertkirchen and Meiringen. The rocks of this area consist of very hard limestone formed in the Cretaceous period, 130 - 160 million years ago. Melted glacial water for centuries honed rocks, paving its way. The waters of the Aaregletcher glacier formed seven gorges in the mountain range, along the “youngest” of them the Aare River flows. The length of the gorge is 1.4 km, its depth is 200 meters, in the narrowest place the gorge has a width of only 1 meter. The speed of the Aara water in the canyon is from 4 to 12 kilometers per hour. Since 1888, the canyon has become available for tourists. The gorge has become a popular tourist destination, every year tens of thousands of people visit it. Infrastructure was created at two entrances from different sides of the gorge - Western and Eastern. In 1912, a special tram service was launched to deliver tourists from Meiringen, and evening lighting was organized in the western part of the gorge. The path through the Aare gorge takes 40 minutes, you need to go about 1 km of wooden paths and bridges installed on steel mounts driven into the rock, and 400 meters of tunnels. Wheelchair access is available from the western entrance to the middle of the gorge. There are two cut holes in the rock wall - these are the entrances to the bunkers equipped inside the rock and connected by a tunnel system. They were built in 1940 to house the headquarters of the 3rd Army Corps of the Swiss Army. From local residents you can hear the legend of the mystical animal Tatzelvurm - a monster with a snake body, legs, a long tail and a toothy mouth, which was allegedly seen in the gorge in 1814.