The upper Maltatal ends at the Kölnbrein Dam east of the Ankogel Group, from where the Malta stream flows southeastwards about down along the mountains of the Reisseck Group to Gmünd and into the Lieser river. The valley is known for its many waterfalls during snowmelt season, therefore also called the 'Valley of Falling Waters'. An long scenic route, the former construction road of the Malta-Reisseck Power Plant Group with numerous serpentines and six tunnels leads up to the dam at , site of a hotel and a hydropower exhibition.