Cambios

[[Imagen:Perfil_valle_aguas_calientes.jpg|thumb|left|Aguas Calientes Trek Profile. Waypoints available for downloading]]

A few steps to the left of the entrance to the Termas de Chillan resort hot springs, at the last curve before the parking lot, a path begins that ascends a forest of Coigües. At the start you will see a wooden that says "Cabalgatas a Fumarolas - T. Aguas Calientes - Cel. xxxxxxxx". This point is at 1.710 meters of elevation.

Continuing along the main trail some 630 meters, the valley ends. There are campsites and a larger thermal pool that is fed by a small waterfall. There are colder streams that feed into this pool too so you can sit where the temperature is most comfortable. This point is the end of the trek, however you can continue on the trail to Rio Ñuble. This is described in the trek

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