The reserve was created by decree in March 1994 and covers 7,537 ha (18,620 acres) distributed in Panguipulli, Los Lagos and Futrono municipality.

The principal access goes from the Pan American Highway to Enco passing by Panguipulli and Choshuenco.

From Enco a small way goes to the refuge area, during the summer months tracked vehicles can go there.

In the refuge sector there is a mountain hut leased to Los Lagos municipality, some old military buildings ruins, and the rests of a small ski centre.

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