▁in ▁which ▁it ▁is ▁found ▁are ▁high ▁salt ▁concentr ations ▁and ▁frequent ▁or ▁occas ional ▁des ic c ating ▁conditions . ▁H oney comb ▁weather ing ▁is ▁rarely ▁associated ▁with ▁highly ▁sol ub le ▁rock ▁such ▁as ▁lim estone ▁or ▁dol om ite . ▁H oney com bs ▁also ▁occur ▁in ▁stone ▁structures , ▁e . g . ▁buildings ▁and ▁break w aters , ▁where ▁a ▁rate ▁of ▁development ▁can ▁be ▁established . ▁H oney comb ▁weather ing ▁has ▁been ▁found ▁to ▁have ▁formed ▁in ▁gre yw ack e ▁blocks ▁since ▁they ▁were ▁used ▁to ▁build ▁se aw alls ▁on ▁the ▁coast ▁of ▁S out heast ▁Australia ▁in ▁ 1 9 4 3 ▁and ▁ 1 9 4 9 . ▁ ▁H oney comb ▁and ▁other ▁forms ▁of ▁ca vern ous ▁weather ing ▁are ▁likely ▁as ▁characteristic ▁of ▁the ▁weather ing ▁of ▁sand st ones ▁as ▁fl uting ▁is ▁of ▁lim est ones , ▁but ▁it ▁is ▁not ▁uniformly ▁or ▁univers ally ▁developed . ▁For ▁example , ▁in ▁some ▁cl iffs , ▁large ▁exp ans es ▁of ▁the ▁rock ▁face ▁exhib it ▁surface ▁weather ing ▁and ▁ca ver ous ▁weather ing ▁of ▁metric ▁dimensions . ▁However , ▁other ▁rock ▁faces ▁are ▁p itted ▁between ▁closely ▁spac ed ▁bed ding ▁and ▁vertical ▁joint ▁plan es . ▁In ▁the ▁south western ▁United ▁States , ▁she er ▁faces ▁of ▁Co con ino ▁and ▁Sup ai ▁Sand st ones ▁cro pping ▁out ▁along ▁the ▁sides ▁of ▁the ▁Grand ▁C any on ▁are ▁only ▁sp ars ely ▁h