The alpine hut "Langalm/Grava Longa" (known as "Long-Olbe" in the South Tyrolian dialect) is located at an altitude of 2283 m at the foot of the impressive north faces of the Three Peaks and only accessible by hiking.
How to reach Toblach/Dobbiaco: https://www.drei-zinnen.info/en/dobbiaco/dobbiaco/contact-and-service/arrival-mobility.html
From Toblach in southern direction until the View of the Three Peaks/Landro.
Parking places are available.