A popular route for those staying in Mayrhofen is to take the Penken lift to the top station and then walk along route 23 to Penkenjoch with views across the Zillertal Alps. Route 57 should then be followed (clearly signposted) past the Wanglalm hut. Route 57 then climbs up to the summit of the Wanglspitze at 2420m continuing on to Hoarbergjoch at 2590m. Continue NNW along route 57 until it joins route 51. Continue along route 51 which becomes steeper until the ridge is reached. Turn west along a well marked trail that leads to the summit of Rastkogel. The final km involves some mild scrambling. The recommended time for the walk is 3.5 to 4 hours each way. These timings are for an average walker in good conditions. The Penken lift starts at 9.00 am and the last trip down is at 4.30pm (2011). It is worth checking before starting as if there are no more lifts it is another 2 to 3 hours walking down to Mayrhofen. (The 1:35000 Mayr map 33 Zillertaller Alpen has all the route numbers for the area clearly marked.)