▁Bet ten feld , ▁cr ater ▁la kes ▁of ▁the ▁Mos enberg ▁ ▁La acher ▁See ▁near ▁Maria ▁La ach , ▁lake ▁in ▁a ▁cal der a ▁of ▁the ▁La acher ▁See ▁vol cano ▁ ▁St ro hner ▁Mär chen ▁( s outh ▁of ▁the ▁Pul ver ma ar ), ▁vol can ic ▁pipe ▁which ▁has ▁become ▁a ▁maar ▁ ▁Pap enk au le , ▁a ▁vol can ic ▁cr ater , ▁and ▁the ▁associated ▁er u ption ▁site ▁of ▁the ▁H ag elsk au le ▁ ▁El fen ma ar ▁near ▁Bad ▁Ber tr ich , ▁an ▁almost ▁entirely ▁er oded ▁strat ov ol cano ▁ ▁Rod der ▁Ma ar ▁near ▁Nied erd ü ren bach , ▁the ▁origin ▁of ▁which ▁is ▁unclear ▁ ▁Ma ars ▁outside ▁the ▁E if el ▁ ▁In ▁Germany ▁there ▁are ▁also ▁several ▁ma ars ▁outside ▁of ▁the ▁E if el . ▁A ▁well - known ▁example ▁is ▁the ▁Mess el ▁pit , ▁a ▁former ▁maar ▁lake ▁near ▁Mess el ▁in ▁the ▁county ▁of ▁D arm stadt - Die burg ▁and ▁which ▁is ▁known ▁for ▁its ▁well ▁preserved ▁foss ils . ▁In ▁addition ▁in ▁the ▁Sw ab ian ▁J ura ▁and ▁the ▁Alb vor land ▁( the ▁Sw ab ian ▁Vol cano ) ▁there ▁are ▁maar - form ing ▁vol cano es . ▁Because ▁the ▁over ▁ 3 5 0 ▁er u ption ▁points ▁were ▁only ▁active ▁in ▁the ▁Upper ▁Mi oc ene ▁ 1 7 ▁to ▁ 1 1   mill ion ▁years ▁ago , ▁all