At Loughaunnaweelaun in County Clare, a small enclosure sits on a level shelf of karst, the distinctive limestone terrain of the Burren region where the ground is grooved and pitted by centuries of rainwater dissolving the rock beneath. The enclosure was recorded as a rectangular structure for years, listed under that description in official surveys throughout the 1990s, but a closer look told a different story.

When the site was physically inspected in 1999, the so-called rectangle turned out to be D-shaped, measuring roughly 17.5 metres on its northeast to southwest axis and 14.6 metres across. Its straight southwestern side is formed by a drystone wall, the kind of dry-laid limestone construction that is common across the Burren, here standing up to 1.2 metres high. Attached to the northeast was an open extension, a roofless annex of sorts, around 7 metres by 11 metres, giving the whole thing an irregular, almost improvised character. The gap between what the records said and what was actually there is a small reminder of how much landscape detail gets fixed in databases before anyone has had a proper look on the ground. What the enclosure was originally used for, whether animal husbandry, cultivation, or something else entirely, is not recorded. What is known is that aerial photography shows the area was cleared at some point between 2009 and 2011, meaning the site as it now stands has been altered relatively recently, and the relationship between the old stonework and the current ground surface may look quite different from what the 1999 inspection described.