The valley is covered by sediments from the Quaternary period, and opens in the east to a marshy landscape with dunes, which connects to the coastal Mediterranean plain.

The Cueva de Bolomor is on the right side of a cliff; it is a karst cave[3] at 100 metres (330 ft) above sea level,[1] surrounded by karstified hills.

Today's mouth of the cave overhangs the valley and offers a view of the coastal area, including the town of Cullera.

[1] A relative rarity for the Middle Pleistocene is the frequency with which the remains of rabbits, marked with cuts, are found; such small, quick prey is unusual for the period, and is most likely a specific feature of a unique locality.

[1] Flake production dominated the flint technology, fire was habitually used, and there was lithic recycling; the Levallois technique was not often used, and no handaxes were found.