Castaneda is a municipality in the Moesa Region in the Swiss canton of Graubünden. Castaneda is first mentioned in 1295. In the mid 19th C…Castaneda is a municipality in the Moesa Region in the Swiss canton of Graubünden. Castaneda is first mentioned in 1295. In the mid 19th Century an ice age era graveyard and settlement was discovered near the village church. It was excavated in 1928, and about 100 graves were discovered. In 1978-80, in Pian del Remit, which is north-west of the church, a Stone Age settlement was discovered underneath an ice age site. The rectangular midden included post holes, fire sites, ceramic fragments and variety of sedimentary rocks and crystals. The site was dated to 2800-1500 BC and included stone and Bronze Age. A multi-stage dry stone wall in Pian del Remit can't be exactly dated but may date from the Iron Age into the modern era. Its original function is not known.