Dún Dealgan Motte
Móta Dhún Dealgan | |
Byrne's Folly atop Dún Dealgan Motte | |
| Alternative name | Cú Chulainn's Castle Castletown Motte Castletown Mount Byrne's Folly |
|---|---|
| Location | Castletown, Dundalk, County Louth, Ireland |
| Region | Castletown River Valley |
| Coordinates | 54°00′50″N 6°25′49″W / 54.013889°N 6.430278°W |
| Type | motte with castellated house |
| Area | 0.85 ha (2.1 acres) |
| Diameter | 43 metres (141 ft) (at summit) |
| Circumference | 135 metres (443 ft) (at summit) |
| Height | 10 metres (33 ft) |
| History | |
| Builder | Bertram III de Verdun |
| Material | earth |
| Founded | late 12th century |
| Periods | Norman Ireland |
| Cultures | Cambro-Norman, Old English |
| Associated with | Normans |
| Site notes | |
| Public access | yes |
| Official name | Dun Dealgan |
| Reference no. | 388 |
Dún Dealgan Motte is a motte and National Monument in Dundalk, Ireland.