Water The Aqua Trail is an adventurous walking path wide enough for buggies and pushchairs. The 1.5 km long trail introduces children to the different types of water in the mountains, with information boards regularly posted to explain fascinating facts, such as how dams are built. There is even a real sailing boat at 1900 meters above sea level! The short walking distance, many rest areas and large picnic area next to the reservoir make the Aqua Trail accessible for children, adults and the elderly.