The largest series of spur and groove structures on the seaward side of Peros Banhos.  Spurs are -2 m high and spaced 2 m.  They extend 70 m to seaward.   The algal ridge is to the right.  The 'design' of the spurs is such that the back swash from one wave meets and partially cancels the energy of the next wave, which probably greatly helps in reducing the impacts from the breakers.  1979.
