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Uploaded on:
13/02/2009 06:38:58
Type:
Digital Asset
File Size:
302.48 KB
Dimensions:
1000 x 715 pixels
3884 views 4 downloads
P number: P000440
Old photograph number: C01745
Caption: An Steall, Glen Nevis. Inverness-shire. The waterfall 'An Steall' of the 'hanging valley' of Allt Coire a' Mhail is seen in the centre. An Garbhanach of the Mamore Forest is the peak.
Description: An Steall, Glen Nevis. Inverness-shire. The waterfall 'An Steall' of the 'hanging valley' of Allt Coire a' Mhail is seen in the centre. An Garbhanach of the Mamore Forest is the peak. The rock-slope on the left shows a water-worn surface of hornfelsed mica-schists, (Leven Schists) with pot-holes ('giant kettles') due to glacial stream cascading down marginal crevasse between ice and rock while the gorge was still filled with the Glen Nevis glacier. A hanging valley occurs when the main valley is over-deepened in relation to the tributary valley. In this case, the over-deepening is caused by a glacier that occupied the Glen Nevis valley. It is usual to have rapids or a waterfall where the hanging valley enters the main valley.
Date taken: 01/01/1910
Photographer: Lunn, R.
Copyright statement: Crown
Acknowledgment: This image was digitized with grant-in-aid from SCRAN the Scottish Cultural Resources Access Network
X longitude/easting: 218500
Y latitude/northing: 768500
Coordinate reference system, ESPG code: 27700 (OSGB 1936 / British National Grid)
Orientation: Landscape
Size: 302.48 KB; 1000 x 715 pixels; 85 x 61 mm (print at 300 DPI); 265 x 189 mm (screen at 96 DPI);
Average Rating: Not yet rated
Categories: Best of BGS Images/ Images from the archives, Geoscience subjects/ Landforms, glaciation/ Hanging valleys and gorges  

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