The area east of the Burnsall Knolls in the north-east Lowlands of Craven is occupied by limestones of the Northern facies type, apparently unaffected by the presence of the North Craven Fault.The beds are overlain unconformably by the Grassington Grit, which, overstepping the flanks of the Skyreholme anticlne, thus continues to the south the unconformity noticed north of the fault. It is suggested hat the line of the Skyreholme anticlne is the axis of uplift which gave rise to pre-Millstone Grit denudation. Passing westwards the beds become Reef-like in character and eventually grade into the Reef limestones of Burnsall.Finally, my best thanks are due to Mr. R. G. S. Hudson for much help and guidance during the progress of the above work.