Unterberg - Wastlalm circular trail

From Unterberg follow the road (initially asphalt) no. 11 and no. 28 to the Christernreith mountain inn. From there continue along trail no. 28 to the Thoraualm.
Above this, trail no. 28 and no. 28a lead to the Wastlalm and then via trails no. 28a and no. 445 back to...