A burrowing may produce ridges on a surface.Logical formLearned from1 sentences. A surface may be reduced to a series of (interstream ridges).Logical formLearned from1 sentences. (Interstream ridges) can be narrow.Logical formLearned from1 sentences. A series can be constituted-of-or-filled-with (interstream ridges).Logical formLearned from1 sentences. Ridges can be (lava flows).Logical formLearned from1 sentences. (Mountain ridges) can be west.Logical formLearned from1 sentences. Ridges may trend in directions.Logical formLearned from1 sentences. Peaks can be in ridges.Logical formLearned from1 sentences. Ridges can be (dwelling foundations).Logical formLearned from1 sentences. Some ridges can be on a plastron.Logical formLearned from1 sentences. Ridges may rise above a level of a land.Logical formLearned from1 sentences. Plateaus may contain ridges.Logical formLearned from1 sentences. Ridges can be constituted-of-or-filled-with paste.Logical formLearned from1 sentences. Faces of gods may be painted green with ridges of paste.Logical formLearned from1 sentences. Ridges may have in some places.Logical formLearned from1 sentences.