This is huge forest is the size of Guadalajara, and just next door. But entrances are a bit hidden and harder to get to than they should. Two main public entrances are to the Rio Caliente (hot creek) and Mariano Otero.
The first has lots of families, and is best to do on weekdays to avoid crowds or need to go a good ways down stream (first empty parts of the river can be too hot). It is on the road to Tequila just past Pinar de la Venta.
Second entrance is really aimed at mountain bikers, but there is some wonderful hiking as well.
Other 'hidden' entrances also exist.
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