GARTH, a hamlet, in the parish and newly-created borough of MERTHYR-TYDVIL, county of GLAMORGAN, SOUTH WALES, 1 mile (N.)
from Merthyr-Tydvil. The population is returned with the parish. It extends close to the town of Merthyr-Tydvil, the road
from that place to Abergavenny passing through it over Blaen Rumney common, and is principally inhabited by the numerous
workmen employed at the extensive manufactories in the former town, and the coal mines in its neighbourhood. The remains
of Morlais castle, a more detailed account of which is given in the article on the parish, and the modern mansion of
Cyvarthva castle, with its park, are both situated in this hamlet, which is well wooded on the banks of the Lesser Tff.
Immediately below the ruins of Morlais castle this river, which foams impetuously over its rocky bed, is crossed by Pont
Sam, a picturesque bridge thrown over a chasm fringed with underwood, thirty feet in breadth. In the limestone rock a
little above this bridge is a hollow, called Dryford cavern, into which a spring falls from above, and in times of flood
flows over, forming a picturesque cascade.