Peru has over 3,500 different varieties of orchids. It is home to the tallest sand dune in the world with a height of 3,860 from base to summit. By about 3,000 B.C., almost every weaving technique known today had been invented by the Peruvians. There are 10 million alpacas in the world, and three quarters of them live in Peru. It is the largest exporter of asparagus in the world.