wald ▁is ▁named ▁after ▁the ▁mountain ▁r idge ▁called ▁the ▁K eller , ▁mentioned ▁above . ▁Where ▁the ▁name ▁K eller ▁came ▁from ▁is ▁interpreted ▁two ▁different ▁ways : ▁Begin ning ▁about ▁ 1 6 0 0 , ▁the ▁wood lands ▁were ▁in ▁heavy ▁use ▁in ▁char co al ▁making ▁for ▁the ▁many ▁iron works ▁and ▁co pper works ▁that ▁needed ▁char co al ▁to ▁fuel ▁their ▁furn aces , ▁thus ▁leading ▁to ▁the ▁name ▁Kö h ler wald ▁(" char co al ▁mak er ▁forest "), ▁commonly ▁pron ounced ▁Kö ll er wald ▁( with ▁an ▁ ▁sound , ▁rather ▁than ▁; ▁this ▁ ▁is ▁not ▁very ▁different ▁from ▁the ▁ ▁sound ▁of ▁K eller wald ). ▁ ▁The ▁other ▁interpretation ▁holds ▁that ▁the ▁name ▁was ▁originally ▁K ah ler ▁Wald ▁(" bare ▁forest " ▁or ▁" b ald ▁forest "), ▁a ▁name ▁suggested ▁by ▁heavy ▁clear ing ▁in ▁some ▁parts ▁of ▁the ▁woods ▁at ▁one ▁time . ▁ ▁Either ▁process ▁could ▁have ▁yield ed ▁the ▁name ▁K eller wald ▁used ▁today ▁through ▁sound ▁sh ifts . ▁ ▁Wald ▁simply ▁means ▁" for est " ▁in ▁German . ▁ ▁Conserv ation ▁status ▁ ▁The ▁K eller wald ▁is ▁subject ▁to ▁a ▁special ▁conservation ▁status . ▁Al most ▁its ▁whole ▁un sp o ilt ▁natural ▁area ▁belongs ▁to ▁the ▁K eller wald - E der see ▁Nature ▁Park . ▁The ▁northern ▁part , ▁with ▁an ▁area ▁of ▁ 5 7 . 2 4   km 2 ▁has ▁been ▁designated ▁since ▁ 1 ▁January