▁the ▁be aches ▁in ▁the ▁southern ▁end ▁of ▁the ▁lake ▁bas in , ▁its ▁base ▁being ▁ ▁above ▁Lake ▁Michigan ▁level . ▁On ▁the ▁Michigan ▁shore ▁east ▁of ▁Bass ▁Lake ▁in ▁Mason ▁County ▁a ▁cut ▁bank ▁was ▁noted ▁whose ▁level ▁at ▁base ▁is ▁about ▁ ▁above ▁Lake ▁Michigan . ▁S light ▁indic ations ▁of ▁wave ▁action ▁at ▁a ▁level ▁about ▁ ▁above ▁Lake ▁Michigan ▁are ▁found ▁at ▁several ▁other ▁points ▁in ▁re cess es ▁along ▁the ▁Michigan ▁shore . ▁ ▁Sand ▁d unes ▁Att ention ▁has ▁been ▁directed ▁to ▁sand ▁rid ges ▁and ▁low ▁d unes ▁that ▁are ▁apparently ▁connected ▁with ▁the ▁Glen wood ▁beach . ▁They ▁are , ▁however , ▁incon sp ic uous ▁compared ▁with ▁the ▁d unes ▁that ▁lie ▁along ▁the ▁modern ▁shore . ▁Where ver ▁the ▁beach ▁is ▁sand y , ▁d unes ▁are ▁in ▁process ▁of ▁formation , ▁from ▁the ▁head ▁of ▁the ▁lake ▁in ▁north western ▁Indiana ▁along ▁the ▁entire ▁eastern ▁shore ▁of ▁Lake ▁Michigan ▁to ▁the ▁Stra its ▁of ▁Mack in ac . ▁The ▁longest ▁un inter rupted ▁st ret ches ▁are ▁between ▁the ▁mouth s ▁of ▁Kal am az oo ▁and ▁White ▁rivers ▁in ▁Michigan ▁and ▁from ▁the ▁vic inity ▁of ▁St . ▁Joseph , ▁Michigan , ▁south west ward ▁past ▁Michigan ▁City , ▁Indiana , ▁to ▁the ▁head ▁of ▁the ▁lake . ▁Very ▁prominent ▁d unes ▁occup y ▁much ▁of ▁the ▁interval ▁between ▁Lud ington ▁and ▁Man iste e , ▁and ▁a ▁prominent ▁d une ▁bel t ▁about ▁ ▁long ▁in ▁north western ▁O