north-west from Lake Way, and which rises to about a height of 
250 feet above the general level of the surrounding country, is 
built u]) of dolomitic limestone which however, is represented by 
only very thin heds, nowhere exceeding three or four 
feet in thickness, alternating with siliceous shales or slates. 
(Fig. 23). The beds are almost uniformally horizontal. 
Fig. 22. 
Limestone Clitfs, Napier Range, Derby, Kimberley Division. 
Fig 23. 
Fla.;gy Dolomitic Limestone and Shale, NuUagine Formation, 
Mount Rus'^ell, Fast Murchison Goldfield. 
