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sub-crest
sub-crest n.
Brit. 
/ˈsʌbkrɛst/
, /ˈsʌbkrɛst/U.S. /ˈsəbˌkrɛst/
/ˈsəbˌkrɛst/ΚΠ
1830 J. S. Macaulay Treat. Field Defilement 21 It will generally happen that the plane or planes of the sub-crests will intersect the surface of the earth.
1911 Bull. Dept. Geol. (Univ. Calif.) 28 Feb. 116 There is no evidence of stream erosion on any side of this particular sub-crest.
2000 Advertiser (Adelaide) (Nexis) 15 Apr. m38 Finally we..saw, along the sub-crests of the mountain, a series of stone cairns.
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