bay beach cliff coastline Cornish cornwall cove England english flow Great Britain hillside incoming inlet natural nature ocean plants racing rocks sand sandy sea shore tide water waves Armeria cliffs flowers sheltered spring thrift wild access barrel cannon defend defensive entrance firarm guard guarded gun harbour metal port seaside stock stone walls blue curved danger exercise fence fencing footpath path protect safety trail Trek walk wooden ancient architecture castle crest design elements emblem fortress historical insignia Michael motto mount national trust old saint St. Michael's Mount stronghold bollard dock haven iron mooring quay quayside rusty wall clouds fun group holiday leisure mainland Marazion people pleasure rock sky tour tourism tourists vacation boulders coast coastal horizon inviting surf apple bench garden green landscape orchard peaceful quiet relax rest rural scene seat sit tranquil trees view boulder clifftop headland insecure lichens precarious unsafe gnomon measure quality sundial time