Pranres lle 
Rock-SHELTERS OF HELIX ASPERSA IN 
CARBONIFEROUS LIMESTONE ON BREAN Down, 
WESTON-SUPER-MARE. 
The rock was situated in an exposed position and is greatly 
weathered. In sheltered situations the apertures of the 
hybernacula are usually circular. 
From a photograph by George Hutchinson, Sidcot School. 
