
Porta Nera
Italy • 3731 m
Historique
- 1re traversée (N-S) : 18 août 1845 - John Ball, Matthäus Zumtaugwald.
Bibliographie
- Passage of the Schwarz Thor from Zermatt to Ayas par J. Ball, Peaks, Passes, and Glaciers - I, 1860, p. 108-133.

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