Environmental Engineering Reference
In-Depth Information
FIG
155.
The 'hole at the Poynt of Worme heade', the Outer Head of the Worm, as described by John Leyland in the
sixteenth century. It lies at the centre of the photograph.
FIG
156.
The Llethrid Swallet 'Curtain', a spectacular stalactite formation. (Peter Francis)
