The salt works or Salinas, at Saelices de la Sal, Guagalajara, Spain. The first documents relating to the extraction of salt in Saelices de la Sal date back to 1203 CE. These saltworks have been used continuously since that time and have gone through a number of transformations.
Global Digital Heritage and Baraka Arqueólogos did a drone survey of this important heritage site. 800 photos processed in Reality Capture. Model reduced from 200 million to 5 million polys.