Answer: ELEVS

AnswerCrossword Clue
ELEVSThey're rarely below zero: Abbr.
ELEVSMountain rd. postings
ELEVSAbbrs. on mountain pass signs
ELEVSHgts.
ELEVSMtn. stats
ELEVSEmpire State Bldg. necessities
ELEVSRocky Mtn. highs?
ELEVSStats. for mtns.
ELEVSMtn. statistics