▁G ail dorf ) ▁in ▁the ▁north ▁to ▁ ▁Ab ts g m ünd ▁in ▁the ▁sout heast . ▁Municipal ities ▁within ▁the ▁region ▁include ▁G sch wend , ▁E sch ach , ▁Gö gg ingen , ▁Ru pp ert sh of en ▁and ▁Sch ech ingen . ▁ ▁The ▁northern ▁boundary ▁of ▁the ▁Fr icken ho fer ▁Höhe ▁and ▁its ▁sp urs ▁is ▁the ▁lowest ▁reaches ▁of ▁the ▁” F ichten berger ” ▁Rot , ▁a ▁river ▁that ▁approaches ▁from ▁the ▁west ▁and ▁em pt ies ▁into ▁the ▁River ▁Koch er ▁near ▁G ail dorf - Un ter rot . ▁The ▁other ▁boundaries , ▁running ▁anti - clock wise , ▁ ▁are ▁the ▁“ G sch w ender ” ▁Rot ▁and ▁its ▁two ▁head stream s , ▁the ▁Le in ▁and ▁Koch er . ▁The ▁G sch w ender ▁Rot ▁flows ▁out ▁of ▁G sch wend ▁south wards ▁through ▁the ▁small ▁villages ▁of ▁Bir ken lo he , ▁H önig ▁and ▁the ▁Re hnen m ühle ▁Ret ention ▁Bas in ▁to ▁its ▁mouth ▁on ▁the ▁Le in ▁in ▁T ä fer rot ▁and ▁dem arc ates ▁the ▁range ▁to ▁the ▁west ▁where ▁it ▁ad jo ins ▁the ▁Wel z heim ▁Forest . ▁The ▁Le in ▁initially ▁r ns ▁to ▁He uch lingen ▁in ▁an ▁e aster ly ▁direction . ▁It ▁forms ▁the ▁southern ▁boundary ▁as ▁it ▁heads ▁n ortheast ▁to ▁its ▁mouth ▁on ▁the ▁Koch er ▁in ▁Ab ts g m ünd , ▁separ ating ▁the ▁range ▁from ▁the ▁Well and .