The name Cordillera Blanca in and of itself sounds imposing. Known to be one of the biggest mountain ranges in the world, the majority of its peaks measure around 6000 m.a.s.l.
Located 100 km from the Pacific coast and measuring 180 km long, The Cordillera Blanca forms a natural barrier between the coast and the Amazon jungle. Every mountain top is more beautiful than the next, and many hiking trips can be arranged through the Cordillera’s grand mountain passes. The mountain roads were built centuries ago by the native people of the region.
The Cordillera Blanca, and its many beautiful places, is now accessible by various roads using 4x4 vehicles. Huaraz, at 3091 m.a.s.l., used to be a beautiful little town until the terrible earthquake of 1970. Though the village has been reconstructed, it is not quite as beautiful as it used to be. That said, the National Park of Huascaran is close to Huaraz; founded in 1975 the Park is a nature preserve for the amazing flora and fauna of the region. The surrounding landscapes are beyond beautiful, and the area is also well-known for its giant plants called Puyas de Raymondy, some of which measure more than 10 meters. Definitely worth seeing! To organize your tour in the Cordillera Blanca contact the travel agency Terra Andina Peru 
The Cordillera Blanca and its Huascarán National Park offer excellent possibilities for trekking.
Mate de Coca, a drink made from Coca leaves infused in boiling water, Supposed to cure upset stomachs, Altitude sickness, and almost any ailment.
You get whole leaves in bars or cafes, but you can buy teabags with a handy string to pick the bag out when brewed.
All running water must be treated as suspect, and treated to make it drinkable. There is a risk of guiardia so chlorine treatments only will not kill these, use reverse osmosis filters or iodine drops of boil, but remember as you are at altitude, the water will boil at a lower temperature and you should let it boil for a minute or two, rather than a short boil.