▁valley ▁of ▁the ▁O stra ch . ▁To ▁the ▁east ▁runs ▁the ▁long ▁valley ▁of ▁the ▁Schwar zw asser ▁from ▁the ▁foot ▁of ▁the ▁S att el kö p fe ▁and ▁which ▁em pt ies ▁into ▁the ▁Le ch ▁south ▁of ▁Wei ßen bach ▁and ▁should ▁not ▁be ▁confused ▁with ▁its ▁better ▁known ▁counter part ▁in ▁the ▁Klein wal sert al . ▁A ▁walk ▁on ▁the ▁J ub ile e ▁Tra il ▁between ▁the ▁Will ers al pe ▁and ▁Prin z ▁L uit p old ▁Haus ▁takes ▁the ▁visitor ▁along ▁a ▁mountain ▁path ▁at ▁considerable ▁height ▁along ▁most ▁of ▁the ▁chain . ▁From ▁the ▁high ▁s addle ▁of ▁Ober jo ch ▁the ▁linking ▁trail ▁runs ▁to ▁the ▁J ub ile e ▁Tra il ▁via ▁Is eler , ▁B sch ie ßer ▁and ▁Pont en ▁to ▁the ▁Will ers al pe . ▁ ▁Horn bach ▁chain ▁ ▁The ▁Horn bach ▁chain ▁is ▁the ▁largest ▁side ▁r idge ▁of ▁the ▁main ▁chain ▁of ▁the ▁All g äu ▁Al ps . ▁This ▁subgroup ▁branches ▁from ▁the ▁main ▁r idge ▁at ▁the ▁Ö f ners pit ze . ▁In ▁the ▁south ▁it ▁is ▁bounded ▁by ▁the ▁Le ch ▁valley , ▁in ▁the ▁north ▁by ▁the ▁e pon ym ous ▁en ▁Horn bach ▁valley . ▁In ▁the ▁Horn bach ▁chain ▁is ▁the ▁highest ▁peak ▁of ▁the ▁All g äu ▁Al ps , ▁the ▁Groß er ▁K rott enk opf , ▁ 2 , 6 5 6   m , ▁and ▁several ▁other ▁pe aks ▁that ▁belong ▁to ▁the