The white stuff across the bottom of the image is the stones of the hillfort’s ramparts.
Worlebury Camp (also known as Worlebury Hillfort) is the site of an Iron Age hillfort on Worlebury Hill, north of Weston-super-Mare in Somerset, England. The fort was designed for defence, as is evidenced by the number of walls and ditches around the site. Several large triangular platforms have been uncovered around the sides of the fort, lower down on the hillside. Nearly one hundred storage pits of various sizes were cut into the bedrock, and many of these had human remains, coins, and other artefacts in them.
The large multivallate hillfort on Worlebury Hill is an outstanding example of its class. It survives well and is known from excavations to contain archaeological and environmental information relating to the monument and the landscape in which it was constructed and later reused. This example is unusual in terms of its location as hillforts on this scale are rarely situated on coastal promontories.