The Doosweiher was formed by the water that flowed over the Rötebach into the Amerbacher Mühlweiher through a 49 m long and 5 m wide dam. From the dammed pond, the 1328 m long Doos Canal flowed in the direction of Wemding to supply the town's mills with water. From its completion in 1537, the canal supplied drinking and service water. Later, so-called "Brunnenstuben" (fountain rooms) were built at regular intervals, primarily to supply fresh air and to clean the sewers. Today one of the fountain rooms at the end of the canal is still preserved, but it has almost completely grown in and can only be recognized by the roaring of the water. The canal, on the other hand, was still partially used until 1957 and, next to the pond, was a meeting point for lumberjacks, mushroom pickers, field workers and village messengers.
According to legend, Huaterle, a little man with a wide-brimmed hat, appears and warns us to leave. The term of the Wemdinger "Doosköpf" also has its origin here. Because the city workers carried out flow tests on the canal and kept shouting at each other: "Doost es scho?"
The Doos Spring is a shallow karst dammed spring with a discharge of about 20 l/s, which is followed by a meandering channel two meters wide. A small staircase for access and moss-covered limestone frame the spring system.
The tracks left by numerous beavers around the pond are characteristic of the landscape.