Burrén and Burrena, known popularly as Las Dos Teticas, are twin hills in Aragon, Spain.

They are located in the Fréscano municipal limits, near the road between this town and Mallén.

There are two ancient Iron Age Urnfield culture archaeological sites beneath the hills.

These mountains are isolated hills visible from far away in the flat landscape of northern Campo de Borja comarca.

This article about a location in the Province of Zaragoza is a stub.