Pampa Alta Pass (Spanish: Paso Pampa Alta), also known as Puesto Viejo (Old Post), is a boundary pass between Argentina and Chile, joining Aysén del General Carlos Ibáñez del Campo Region and Chubut Province.
The elevation of the pass is 865 metres (2,838 feet) above sea level.
To leave Chile, it is necessary to obtain a pass from the international police in Coihaique.
The nearest police assistance is situated 4 km (2.5 mi) away from the pass and the closest inhabited places are Balmaceda and Coihaique, in Chile.
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