I understand that you are still working on it, but if all SP pages contained as much info as is already there on this one, things would look bright! Keep the work going!
I strongly recomend to change this page into a group page (e.g. like Hohe Tauern Group) and put the mountains in separate pages.
I have read in a guide book (2001) that you need a permit the "Direccion de Fronteras y Limites" for Marmolejo, Volcan San Jose (and several other border peaks). Can anybody provide up to date information
Great page. I think you have enough information for making separate pages about the specific mountains. Please, ask me if you think that you need some aditional info, I live in Santiago and know well this area.