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Tidenham rail tunnel entrance, disused. Built for Wye Valley Railway
Dayhouse Quarry, Lower Dolomite Beds
Fissure in dolomite filled with debris derived from Triassic formations
Dayhouse Quarry, Lower Dolomite Beds, dipping at 70 deg
Dayhouse Quarry, now used as a diving centre
Severn shoreline; Mercia Mudstones
Blue Anchor Formation (Tea Green Marls) contain calcite rich patches of infill, possibly algal mats.
Close up of possible algal mat
Close up of possible algal mat