Know Before You Go
Since the Dolmen of Guadalperal is usually hidden beneath gallons of water, no tourist infrastructure exists to make your visit smooth. The nearest road, which goes through private property, is aptly named the Guadalperal Highway. From there, you hike. It’s not easy. Bring water. Ask locals for help as the shoreline fluctuates. If the reservoir is higher than the freakishly low levels of August 2019, you won’t have access.
If the monument is submerged, you can still ponder what mysteries lie under the Valdecañas lake using nearby towns or hotels as a base. Also worthy of checking out is the “Temple of Marble,” an incredibly well preserved Roman temple that was moved to higher land before the reservoir was built. The rest of the Roman town that housed the temple is also underwater.