Cambios

==Location and access==

““Olivares River-Gran Salto” Patrimonial Road is located 86 km North-East Santiago, following road G- 25 Cajón del Maipo to the East, until Río Colorado crossing, taking then Road G- 345 Cajón del Colorado, to the North-East, until the location of El Alfalfal. Access to the road from the location of El Alfalfal is restricted at Gener S.A. control, having to request prior authorization to the Ministry of National Property. After recording entry at the control barrier, there are 7 km of double lane gravel road, parallel to Colorado River by the North, until reaching the first detour, taking alternative road to the left, the access to Olivares River basin. At this point starts a 12 km tour to the North, with a maximum 400 meter unevenness through a one lane road, along Olivares River border, and climbing a little slope until reaching Olivares River intake, corresponding to Gener S.A.’s Olivares Sub-station. The road starts in a little detour to the left, just before arriving to intake facilities, specifically, at coordinates 394604 E / 6303570 N. Such road is bounded in the North by Gran Salto del Olivares, in the East by Olivares River, in the South by Olivares Intake, and in the West by Cordón del Cepo. “Olivares River-Gran Salto” Patrimonial Road is located North-East the pre-cordilleran location called El Alfalfal, district of San José de Maipo. It is a 27 km lineal road that recovers old paths used for mining, hunting, and cattle-raising activities, divided into four segments from Olivares River Sub-station, 2.050 meters above the sea level (Intake) to Gran Salto del Río Olivares, located 2.800 m.a.s.l. At least 4 days must be considered to complete the full round circuit, estimating days of 6 hours of continuous hiking, being also possible to ride a horse or mule, also considering in that case 4 days of 4 daily-hour riding. Summer and spring times are advisable in both cases for further security of the visitor. Alternatively, a cross country ski tour may be considered, specifically, in the first three segments at the beginning of spring time.

==First segment==

[[Imagen:Valle olivares.jpg|thumb|Río Olivares Valley just befores Casa de Piedra. looking north, December 2005]]

[[Imagen:Perfil rio olivares.png|thumb|Profile of the trek Río Olivares. (It lacks the last 1910 meters to the lookout, at 2872 masl, but the global altitude database(SRTM) does not cover the area]]

[[Imagen:Final valle olivares.jpg|thumb|End of the valley. 12/05]]

[[Imagen:Salto olivares.jpg|thumb|Waterfall. 12/05]]

Degree of Difficulty: Easy to little difficult. Basic raid for family tour. Precaution at El Bordón slope for exposure in inclined hillsides.