A range may consist of a series of ridges.Logical formLearned from3 sentences. Ridges can be above eyes.Logical formLearned from3 sentences. A farmer may make furrows of some centimetres on ridges.Logical formLearned from3 sentences. Ridges can be at a top.Logical formLearned from3 sentences. (Trap rock ridges) may generate terrain.Logical formLearned from3 sentences. Ridges can be colored.Logical formLearned from3 sentences. A carapace may be distinguished by some ridges.Logical formLearned from3 sentences. A head can be with ridges.Logical formLearned from3 sentences. Ridges may undergo a discovery.Logical formLearned from3 sentences. Ridges can be dense.Logical formLearned from3 sentences. Ridges can be inaccessible.Logical formLearned from3 sentences. Ridges can be permanent.Logical formLearned from3 sentences. Ridges may pertain-to a planet.Logical formLearned from3 sentences. Ridges may be separated by gullies.Logical formLearned from3 sentences. Ridges can be absent.Logical formLearned from3 sentences.