Twidale & Bourne: Geomorphology of The Humps, Hyden 
Figure 9. (A) Boxwork pattern due to greater resistance to weathering and erosion of intrusive veins, south of crestal area. Note rough 
surface of slope above, and porphyritic texture of rock seen in foreground. Hammer gives scale. (B) Wavy Tramlines' to south of crestal 
area. 
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