The cluster of burial mounds at Elton came to light not through a dedicated excavation or a local legend, but because engineers planning a route for a natural gas pipeline commissioned an archaeological survey in 1982. What that survey revealed, in wet pasture a short distance north-east of the Morningstar River, was not a single mound but evidence of an entire barrow cemetery, the kind of prehistoric funerary landscape that tends to suggest a community returned to the same stretch of ground, generation after generation, to bury its dead.

A barrow is, at its simplest, a mound of earth or stone raised over a burial, often ringed by a ditch from which the material was originally dug. The ditch barrow variant takes its name from that surrounding feature, which can sometimes survive as a cropmark long after the mound itself has been ploughed or eroded flat. The Archaeology Department at University College Cork carried out the Route Selection Study report for Bórd Gáis Éireann, working in consultation with ARUP Pipeline Engineering, and the resulting record, published by Woodman in 1983, identified as many as 37 possible barrows within a relatively compact area measuring roughly 230 metres north to south and 300 metres east to west. The Discovery Programme returned to the site in 1986, examining aerial photographs taken during the Bruff aerial photographic survey, and listed this particular example as Site No. 37, a potential barrow. Further confirmation came from Digital Globe orthoimagery captured between 2011 and 2013, which showed a faint cropmark consistent with the circular outline of a ditch barrow beneath the pasture.

The site sits in wet grassland approximately 280 metres north-east of the Morningstar River, which itself marks the townland boundary between Elton and Ballinvana. That kind of low-lying, damp ground is not always easy to cross in the wetter months, and the cropmarks that have revealed so much about this site are most likely to be visible from the air during dry summers, when differences in soil moisture and vegetation growth bring buried features to the surface. For anyone curious about the broader landscape, the concentration of 37 possible monuments within such a compact area makes this part of south County Limerick worth examining on aerial platforms and historic map layers before any ground-level visit, since the individual mounds are subtle and the setting, without prior knowledge of what lies beneath, looks like ordinary farmland.