It is named after Río Los Cipreses, a tributary of Cachapoal River and lies in one of the most glaciated areas of the Central Chile Andes.

In addition to the mountains, the reserve contains various prehispanic petroglyphs and an array of flora and fauna.

As of 2012, public transport to the reserve is either extremely limited or non-existent, and travelling there by private vehicle is recommended.

A limited number of tour operators in Rancagua offer trips to the reserve.

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