Making two holes for two...

Making two holes for two bolt's, only in the end of each pitch you have 2 bolts.
For this route, you must have a lot of experience in trad climb, because the protection is... almost impossible.
You need: cams (for the second pitch), nuts, curve nuts, hexentrics, half moons, and a lot of pitons ("V", "Z", extraflat).
this aren't a very difficult route, but this are a beautiful and exposed route.