Submitted by György Chityil ... on Fri, 01/19/2018 - 22:00 Hierarchy: NounDescription: {{climbing}} Land at sufficiently high altitudes that there is not enough oxygen to sustain human life.Ngram: death zoneNgram Text: death zoneSource: WiktionaryIssue: 0Wiktionary tag: climbingNgram Count: 2
