CUPA STONE operates Infercoa quarry near the Foz Côa Valley in Portugal, comprising an area of approximately 50,000 square meters. The stone at the quarry has been extracted since the last century. Over the years, Infercoa natural slate has been used for different projects all over the world.
Infercoa natural slate is extracted from a Portuguese quarry, near the Foz Côa Valley, considered the most important open air Palaeolithic rock art site. Listed as a World Heritage Site by Unesco since 1998, this rock art carved into the rugged stones of the Côa Valley has been dated back to around 25.000 years ago.