Montes Universales is a 32 km (20 mi) long mountain range in the southeastern end of the Iberian System.

It is, however, very significant from the hydrographic point of view, for important rivers of the Iberian Peninsula have their source in these mountains, which divide the Atlantic from the Mediterranean watershed.

Among the Iberian rivers that originate in the Montes Universales, the most important are the Tagus on the western slopes, and the Túria, Cabriel and Xúquer on the eastern.

These mountains are covered with, mostly not very dense, clumps of pine, oak and Iberian juniper forest.

Radiocarbon samples from Ojos del Tremedal show that birches, now almost absent from these mountains, were very common in the Montes Universales during the ice age around 9,600 years ago.