The lager unit the abundance of Medina near Mata comes in about 30 foot above the Whirlpool sandstone. At the top of the Catarack occur again the red shales with some hard bed grey stone. Finally at the crag top remain red and bear twirls and Helios. Medina. Resting with absolute conformity on the Cataract is a basal light green sandstone these are cemented by festering burrows. within beds for about one foot in total thickness. This contact shows no sign of breach other than the first sandstone in 1-1/2 inches thick, while 2 in. or 2 in. shale and 3 in. 4 in. The appearance of a sandstone on fine shales. This follows for 10 feet variegated red ad from the redded sandstone of the Medina that at just up one sees as at the Whirlpool at Medina about amid grey show local pillow structure. Overlying are about 7 feet of light green sandstone that are decidedly arms bedded at the crag top in a thickness, varying from nothing to about 5 feet. It is again a case of clean sands channeling into the softer dirty sands. The basal Medina sandstones are ample rock ferlithen, see the specimen.