The Huerto Raso Shelter, or Colungo-Asque Huesca, was first discovered more than 50 years ago and suspected to be a Neolithic site, according to joint Aug. 1 news releases from the Autonomous ...

Lava tubes and other natural shelters were valuable resources for ... Many of the features that define the Neolithic elsewhere, such as sedentism, pottery, and agriculture, are notably absent ...