Otherwise the local culture will seem impenetrable. The Copper is an early spring destination. Come May, the canyon floor becomes torrid. But never fear, the surrounding high and airy Sierra Nevada remains cool a favorite summer retreat for Mexico's urban elite. During the spring, snowmelt from the Andes floods large expanse, creating channels called igarape.
Freshwater dolphins follow river fish through the channels, eventually reaching interior lakes.
And in the jungle lakes, stained black from fallen leaves, the dolphins will playfully swim with humans. The dolphins are called pink dolphins, and frequently they are, but sometimes they tend toward gray. All rights reserved.