An UNESCO listed World Heritage site, Chavín de Huántar is a flat-topped pyramid built no later than 800BC, well before the Chan-Chan on the coast in the Peruvian Andes. Situated just at the start of the Conchucos Valley and nourished by milder Amazonian climate from the East, it is a lot greener than Huaraz at a similar elevation. An important village in its own right, it is served by many transport to and from Huaraz.
It's rather dilapidated appearance betrays its more elaborate inner structure which is a labyrinth of interconnecting tunnels and chambers, most famous of which is the central chamber in the Old Temple which houses a massive stele bearing anthropomorphic features of a jaguar, known as the Lanzón the supreme diety in the Chavin culture.
The sole tunnel that bores through the Cordillera links Huaraz on the western and Chavin on the eastern side of it. This tunnel rudimentary in nature reminds me of the more famous Homer tunnel in Fiordland in New Zealand.