The route climbs up the left-hand side of the rock face and reaches the top of an obvious detached tower before continuing up a nice vertical face. Regenbogen has one section which is more demanding than nearby - and more popular - Brunsin, it is nevertheless well worth climbing.
The Sella group is surrounded by four passes: Pordoi, Campolongo, Gardena and Sella. Torre delle Meisules Est lies in the north between the Sella and Gardena mountain passes. Park the car on the long straight section beneath the Torre (clearly visible from the road).
Approach the tower by following a trail for 20 minutes to its base. The route starts to the left of Brunzin. Ascend the scree slope, start on the black vertical pocketed slab (black sling).
From the top of the tower head left (east) towards the Murfreid towers, then follow the track and descend the gully to the base of the wall.
All belays are well equipped. The pitches are protected by threads and some in-situ pegs. The crux pitch above the detached tower is demanding (6b obligatory), above the peg you can place friends of sling. Take a set of wires, friends and plenty of kevlar threads.