Cropmarks show an oval banjo enclosure approximately 80m diameter, with a south-east facing antenna entrance. These were discovered during RCAHMW aerial reconnaissance on 27th July 2006 (AP_2006_3905-06), but not recorded at the time. The enclosure was first properly recorded during geophysical survey by Pembrokeshire Coast National Park in 2009. This lies immediately to the south-east of a larger, bivallate defended enclosure also discovered from the air (NPRN 410168).
