▁to ▁find ▁David ▁Living stone , ▁the ▁journey ▁which ▁supposed ly ▁ended ▁with ▁the ▁famous ▁phrase , ▁" Dr . ▁Living stone , ▁I ▁pres ume ?" ▁ ▁Pat ron age ▁ ▁Allen ▁is ▁a ▁Pat ron ▁of ▁the ▁Environment al ▁Justice ▁Foundation ▁and ▁Save ▁the ▁Rh ino ▁Trust . ▁ ▁Ex ped itions ▁After ▁publishing ▁five ▁books ▁describing ▁his ▁various ▁l one ▁jour ne ys ▁across ▁the ▁least ▁expl ored ▁regions ▁of ▁the ▁Amazon , ▁New ▁Guinea ▁and ▁Sum atra , ▁in ▁the ▁mid ▁ 1 9 9 0 s ▁Allen ▁went ▁on ▁to ▁develop ▁the ▁technique ▁of ▁self - fil ming ▁with ▁a ▁cam c order , ▁becoming ▁the ▁first ▁( and ▁for ▁many ▁years ▁the ▁only ) ▁television ▁advent urer ▁– ▁through ▁such ▁program mes ▁as ▁The ▁S ke leton ▁Coast , ▁which ▁dep icted ▁a ▁first ▁full ▁traverse ▁by ▁foot ▁of ▁the ▁Nam ib ▁Des ert . ▁ ▁While ▁still ▁a ▁student , ▁Allen ▁took ▁part ▁in ▁scientific ▁exped itions ▁to ▁a ▁vol cano ▁in ▁Costa ▁Rica , ▁to ▁a ▁remote ▁forest ▁in ▁Br une i , ▁and ▁- ▁as ▁leader ▁- ▁to ▁a ▁gla cier ▁in ▁I cel and . ▁He ▁went ▁on ▁to ▁establish ▁his ▁reputation ▁through ▁a ▁series ▁of ▁d aring ▁independent ▁jour ne ys ▁to ▁cross ▁through ▁the ▁least ▁known ▁regions ▁of ▁the ▁Amazon ▁and ▁New ▁Guinea . ▁He ▁made ▁first ▁outside ▁contact ▁with ▁two ▁threatened ▁ind igen ous ▁pe op les ▁– ▁the ▁O bin i ▁and ▁Ya if o . ▁ ▁Today ▁he