The ruthlessly shallow space and imposing concentration of this study parallel work carried out by Millais (in the summer of 1853 in Scotland) and by John Brett later on, both under Ruskin's irksome tutelage. Ruskin himself also produced manu fine drawings of rock. 'The fineness of Nature's work', he wrote in 1856, 'is so great, that into a single block, a foot or two in diameter, she can compress as many changes of form and structure, on a small scal, as she needs for her mountains on a large one.' Llewelyn's camera here gives effective force to this contention.