Cross-bedded Walton Member of the Red Crag Formation. Lower mattock rests on the top of the London Clay.
May 1983
Scratchpads developed and conceived by (alphabetical):
Ed Baker,
Katherine Bouton
Alice Heaton
Dimitris Koureas,
Laurence Livermore,
Dave Roberts,
Simon Rycroft,
Ben Scott,
Vince Smith
