Behind Umhausen, where the Ötztal valley narrows, a moderately ascending asphalt trail winds its way up to the hamlet of Köfels. On your way to Köfels you cross the so-called "Köfler Bergsturz", a 3 km³ big rockslide area which was formed already some 8700 years ago. The crashed mountain blocked the whole Ötztal valley and also Ötztaler Ache river. Due to frictional heat "Köfelsit" stone was formed, a very special almost glassy mineral that is similar to meteorite material.
The Stuiben Falls as well owe their existence to this giant rockslide. Passing the lovely village of Köfels, towering high above the Ötztal at no less than 1400 m above sea level, you take the forest trail up to Wurzberg Alm. There are no considerable ascents until you reach the quaint mountain inn at 1573 m above sea level. A refreshment stop is an absolute must.