The reported site of a Mesolithic settlement at Ballacregga discovered by C.H. Cowley in 1909, in the field numbered 884 on the 1869 1:2500 scale Ordnance Survey map.  A large collection of flints were found and are now kept at the Manx Museum.


The site lies immediately to the north of field 931, where F. Swinnerton carried out an excavation of a Mesolithic settlement site in 1889.  The two sites are thought to be a continuation of the same settlement.


Further excavation undertaken close to the site of the Swinnerton excavation in 2000 found over 1000 struck Mesolithic flints as well as charcoal and charred hazelnut shells. Radiocarbon dates from the shells dated this settlement to approximately 7,000BC, making this the earliest known settlement site on the Isle of Man.