Rock and dam resources

Submitted by DocMartin on 19 August 2005 - 2:16pm

Rock Formations and High Island Dam Resources

Outcrop by the east dam of High Island Reservoir, and rough-hewn Po Pin Chau just offshore, show strong columnar jointing, resulting from cooling of tuff formed from incandescent volcanic ash. The dam is guarded by 7000 concrete dolos –interlocking wave energy diffusion structures that protect against erosion, including during typhoons.

Hike from northeast corner of High Island Reservoir (accessible on foot, or by taxi from Sai Kung.

High Island articles/photo albums elsewhere on the Internet

Sai Kung - High Island Reservoir has a simple map, transport info, a walking route along the southern shore.

High Island Reservoir has photos by Jacek Piwowarxzyk from stage one of the Maclehose Trail.

Sai Kung High Island Reservoir also has shots of the reservoir, and columnar jointing.

Geotrails photos page mainly has shots with columnar jointing, especially in Sai Kung area (including by east dam).

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