Monument Type: Megalithic tomb - passage tomb
Knowth cemetery, site 1. This great kerbed mound is the focal point of a large passage-tomb cemetery, which has been the site of extensive excavations since 1962. Sixteen small passage-tombs are in close proximity to the main mound and another (ME019-030007-) is 120m to the W. The central mound is c. 90m by 80m by 11m in height. Incurving of the kerb to the E and W indicates entrances to two back-to-back passage-tombs. The W tomb, 34.2m long, comprises a bent passage leading to a simple square chamber; a stone basin lies at bend in passage. The E tomb, 40m long, contains a cruciform chamber with corbelled roof; N recess contains an elaborately decorated stone basin. Many of the kerb stones and large numbers of the structural stones of both tombs are decorated with megalithic art.
Sampled 3D point cloud model (less than 1% of total data) of central Megalithic passage tomb mound and satellite tombs at Knowth
Sampled 3D point cloud model (less than 1% of total data) of central mound and internal passages and souterains, Megalithic passage tomb, Knowth
Sampled 3D point cloud model (less than 1% of total data) of east passage, Megalithic passage tomb, Knowth
Sampled 3D point cloud model (less than 1% of total data) of west passage, Megalithic passage tomb, Knowth
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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