▁() ▁ ▁Mi u ▁Ko ▁To i ▁() ▁ ▁Wo ▁T ong ▁Kong ▁() ▁Lin ▁Fa ▁Sh an , ▁T su en ▁W an ▁() ▁ ▁She k ▁L ung ▁K ung , ▁T su en ▁W an ▁() ▁ ▁T in ▁Fu ▁Ts ai ▁Sh an ▁() ▁Ha ▁Fa ▁Sh an , ▁T su en ▁W an ▁() ▁ ▁Ge ology ▁Tai ▁Mo ▁Sh an ▁is ▁an ▁ext inct ▁vol cano ▁d ating ▁from ▁the ▁Jur ass ic ▁period . ▁A ▁small ▁hill ▁known ▁as ▁" K w un ▁Yam ▁Sh an " ▁near ▁the ▁mountain ▁still ▁v ents ▁warm ▁air ▁though ▁cra cks ▁in ▁the ▁rocks ▁that ▁lead ▁all ▁the ▁way ▁to ▁the ▁mant le . ▁The ▁holes ▁that ▁ex h ale ▁warm ▁air ▁are ▁known ▁as ▁" hot ▁p ots ". ▁When ▁the ▁surface ▁temperature ▁is ▁cold , ▁and ▁the ▁warm th ▁of ▁the ▁exp elled ▁air ▁is ▁clearly ▁disc ern ible , ▁this ▁phenomen on ▁is ▁referred ▁to ▁by ▁loc als ▁as ▁" drag on ' s ▁breath ". ▁If ▁the ▁air ▁temperature ▁at ▁the ▁sum mit ▁is ▁ 6 ▁degrees ▁Cel si us , ▁then ▁the ▁air ▁emer ging ▁from ▁the ▁interior ▁of ▁K w un ▁Y um ▁Sh an ▁is ▁somewhere ▁between ▁ 1 3 ▁and ▁ 2 1 ▁degrees ▁Cel si us . ▁These ▁" hot ▁p ots " ▁are ▁rem n ants ▁of ▁the ▁active ▁vol cano ' s ▁super he ated ▁steam ▁v ents . ▁The ▁area ' s ▁vol can ic ▁rocks ▁are