Millmount Fort: Claimed Neolithic passage tomb outside Boyne bend with solstice and equinox alignments

March 30, 2026

Irelandarchaeoastronomy

Castle

Source: Anthony Murphy | In Search of Ireland's Ancient Astronomers | Megalithomania 2007 | AUDIO by MegalithomaniaUK

Millmount was a mound until fortifications by de Lacy in the 1170s, hiding underlying stone age passage tomb. Local folklore identifies it as one of the mounds of Brú na Bóinne, confirmed by folklorist Cillín Barrain Carberry documenting traditions of subterranean passageways blocked since the fortification. Some local traditions claim equinox sun sets over Hill of Slain and winter solstice sun sets over Tara from Millmount Fort. However, archaeologists have presented data questioning whether Millmount sits atop a Stone Age passage tomb, contradicting the original claim. 🏛️🌅 09:08-13:18

Key facts

Millmount Fort was a mound (moat) until 1808 when it was fortified, hiding underlying stone age passage tomb
Local folklore identifies it as one of the mounds of Brú na Bóinne, confirmed by folklorist Kileen Barrain Carberry
Folklore mentions subterranean passageways blocked since Norman/JAC0 fortification around 1808
Equinox: sun sets over Hill of Slain from Millmount Fort
Winter solstice: sun sets over Tara from Millmount Fort
Presenter argues the alignments prove its ancient origin despite being outside the main bend of the Boyne