Answer: ridges

AnswerCrossword Clue
RIDGESVimy and Oak
ridgeslong narrow elevation
ridgesRIDGE, to form into long, narrow elevations
ridgesto provide with ridges
RIDGESRelief map features
RIDGESSome chip features
RIDGESHogbacks
RIDGESLines of dirges
RIDGESCrests
RIDGESRuffles features
RIDGESCorduroy has them.
RIDGESFrets
RIDGESChains of mountains
RIDGESChains of hills
RIDGESCorduroy features
RIDGESChip features
RIDGESSome potato chip features
RIDGESRaised areas