Marmolejo is the most southern summit higher than 6000m all over the world.
In spite of little technical difficulties you should not underestimate him. Violent winds from the close Pacific Ocean have caused the failure of quite a few projects. It is a middle-heavy climb of a volcano with a little risk of crevasses.
You need a first-class condition and acclimatisation as well as a good nose for the correct route.
Team members: Arturo Badía (reached the summit), Fernando Affentranger
The violent winds from the close Pacific Ocean forced me to gave up at 5850m.