The park comprises 6,832 hectares and is located 35 km from Angol, in the highest part of the Cordillera de Nahuelbuta, via the road to Vegas Blancas. The trip takes only an hour and the road is paved for 22 km and then gravel until you reach the park entrance. Access to the park is easy in summer but for the rest of the year you should use a four-wheel-drive vehicle. Consult the local tourist office first.

This park has various attractions, such as the Piedra del Águila, a natural lookout from the top of which you can see the Pacific Ocean and the Cordillera de Los Andes; Las Turberas (an area of scientific interest) with insect-eating plants; the Valle de Pehuenco, Cerro Pichinahuel, Cerro Anay and Coimalín.

This is the only sector in the Cordillera de la Costa with a large concentration of araucarias, as well as lenga, mañío de hoja larga, roble and coigüe. The fauna includes among others zorros chilotes, pudú, churrín, chucao, quique and the carpintero negro, an endangered species.

The climate in the park area is warm, with six rainy months. The summer is dry and hot, while from June to September there may be snowfall. The average annual temperature is 13º C.

There are walking trails such as the Piedra del Águila, Cerro Anay, and El Árbol or Repu Aliwen.

The camping area is Pehuenco and is right next to the administration. It has sites for ten tents, with tables, benches, fireplaces, water, very basic laundry facilities and bathrooms. It is 42 km from Angol and 58 km from Cañete. It is open to the public all year round..