Ilercavonia is an ancient comarca of Spain formerly populated by the ancient Iberian tribe known as Ilercavones. It is a greater comarca made up of smaller ones. The ties between the people of the region transcend ancient kingdom and later provincial borders.

The Maestrazgo or Maestrat is a natural and historical mountainous region, located at the eastern end of the Sistema Ibérico mountain range, in Spain. It encompasses the north of the Autonomous Community of Valencia, in Castellón province, and parts of the east of the Aragonese province of Teruel. The area is mountainous and sparsely populated with a rich mixture of flora and fauna.