top: Looking down onto the pool where water sinks (flowing from the left) in
moderately wet weather. (photo: Juan Corrin, 2004)
middle: Lank Mills in the sink area in dry weather. (photo: Alasdair Neil, 2009)
bottom: Looking downstream to the sink at site 1976. The water is muddy due to washing gear. (photo: Chris Camm, 2009)