SMR No.: GA119-001----
Monument Type: Promontory fort - coastal
On a sheer cliff-top headland on SW side of Inis Mór. This National Monument is known locally as Dún Dúcathair. It consists of an irregular boulder-strewn area of limestone pavement (110m by 80m max.) defined to landward (NE) by a massive drystone rampart (L c. 73m, Wth 7.2m, H 3.7m). Both the inner face of the rampart, with three terraces connected by steps, and the buttressed outer face are the result of 19th-C restoration. Traces of an entrance (Wth 2.2m) survive at E end but Westropp, citing Petrie in 1821, states that it 'had a perfect entrance to the west, destroyed ... by a great cliff-fall before 1839' (1914, 333-4). Outside the rampart is a dense band of chevaux-de-frise (Wth 55m max.) and within it are two groups of houses (GA119-001001-, GA119-002----). (O'Flanagan 1927a, Vol. 3, 242-50; Westropp 1914, 333-4; Robinson 1986, 37-40)
The 3D point cloud model displayed has been decimated to under 1% of the full dataset to enable on-line viewing.
All 3D models, videos and images of this cultural heritage object/site are the copyright of the Discovery Programme and can be licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License (CC BY-NC-ND).
High Resolution Data
3D Capture Method: Terrestrial laser scanning (TLS)
3D Capture Description: Phase based terrestrial laser scanning using a Faro Focus 120 laser scanner. The instrument quotes the following specification:
- Distance accuracy up to ±2mm.
- Range from 0.6m up to 120m.
- Measurement rate up to 976,000 points/sec.
- Intensity & RGB. Integrated colour camera.
- Photorealistic 3D colour scans with up to 70 megapixels.
- Parallax-free colour overlay.
Laser scans geo-referenced using RTK GPS with VRSnow corrections
Data Processing Software
Processing of point cloud data: Faro Scene & Pointools
Meshing of data: Geomagic Studio 2012
3D Modelling & Texturing: Autodesk Mudbox, Mari, 3D Studio Max