This must be the most westerly fortification in mainland Britain, lands end is only about a quarter of a mile away to the south. There is a definite entrance to the fort in stone. There is the vestige of a stone wall, I suspect it's been robbed for other purposes.
The approaches the fort appear to have been cleared of large boulders and the ditch can still be plainly seen. This is the oldest clif fort in Cornwall, dating from about 500 b.c.e. it has been excavated and nearby field systems are reckoned to be associated with the fort.
The giant Myen Du was said to live at Maen Castle near Land's End, and the fairy folk called Coopers banged stones together to warn the inhabitants of St. Ives that rich shoals of fish were approaching.