(Dune ridges) can be coastal.Logical formLearned from4 sentences. (Wind erosion) may create ridges.Logical formLearned from4 sentences. Ridges can be windblown.Logical formLearned from4 sentences. Ridges can be narrow.Logical formLearned from4 sentences. Ridges may undergo an intersection.Logical formLearned from4 sentences. A catchment can be with ridges.Logical formLearned from4 sentences. A crest may pertain-to ridges.Logical formLearned from4 sentences. Ridges can be microscopic.Logical formLearned from4 sentences. Ridges may pertain-to heavens.Logical formLearned from4 sentences. Ridges can be grooved.Logical formLearned from4 sentences. Slopes can be constituted-of-or-filled-with ridges.Logical formLearned from4 sentences. A principal curvature may be associated to ridges.Logical formLearned from4 sentences. Crust may be created at mid-ocean ridges.Logical formLearned from4 sentences. Ridges can be magnificent.Logical formLearned from4 sentences. Some side can be constituted-of-or-filled-with mid-ocean ridges.Logical formLearned from4 sentences.