Professional Mountain Guides
The Natural Renewable Resources Direction (DRNR) of the Government of Mendoza, manages the Provincial Aconcagua Park and spents the visitors permits. You can find there the official registry of mountain and trekking guides breveted to operate in the Aconcagua.
They have, most of them, provincial validity by official qualification given by the Provincial School of Mountain and Trekking Guides (EPGMT); and some with national certificates from the Mountain Guides Argentine Association (AAGM), of which we are few living in Mendoza, with exigencies regulated by DRNR. It is not possible to certify foreign guides with such standards, because they cannot work formally in Argentina due to migratory regulations.