Show ice aft Bt york louis ia almost wholly drift tn rocks often rio upon surface sur Tl ana present UJ nor halo great found must come Q found bowl pa bowl ito OO 00 CLin farther away bowl 70 80 foot foot root ana miles deep valley 1000 feet continuous part ton ton son thorn great bowl ton rock Unni north lake huron COO COO bowl country must sand latter rocks heidelberg limestone oh brought least dog feet itself remark abrasion limit ami hundred feet worn away boulder gray BUM BUM sum mit mount belt nearest lower mount ass |