Ridges may be separated by basins.Logical formLearned from2 sentences. Sides can be with ridges.Logical formLearned from2 sentences. Tubercles can be with some ridges.Logical formLearned from2 sentences. A series can be constituted-of-or-filled-with (granite ridges).Logical formLearned from2 sentences. Some floors may show ridges.Logical formLearned from2 sentences. Ridges of debris may show a direction of (ice movement).Logical formLearned from2 sentences. Some ridges may be produced by tilting of a (sea bottom).Logical formLearned from2 sentences. Ridges may point in direction of prevailing winds.Logical formLearned from2 sentences. Dikes may remain as ridges.Logical formLearned from2 sentences. A surface may have ridges.Logical formLearned from2 sentences. Ridges can be tangled.Logical formLearned from2 sentences. Ridges can be constituted-of-or-filled-with heights.Logical formLearned from2 sentences. Ridges can be on a back.Logical formLearned from2 sentences. Ridges can be carved.Logical formLearned from2 sentences. Warts may be joined by ridges.Logical formLearned from2 sentences.