Environment in which the Gully Oolite formed around 348 million years ago. This palaeo-reconstruction is a northward looking view in from the area of the Voyage.

Southern view in the time of the Gully Oolite. An open shelf sea extends southwards, with dunes of oolites. Beds of crinoids sweep back and forth in the current. The waters may have been visited by some of the strange looking species of shark of the time.

Palaeo-geography of the British Isles around 348 million years ago when the Gully Oolite Formation was accumulating in the future Wye Valley area. The close proximity of a shoreline to the north is shown in the north view reconstruction. The deeper water is part of the Rheic Ocen.