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.
The hiking tour starts at the view of the Three Peaks/Landro. There you have for the first time an unforgettable, view of the north face of the Three Peaks. The path no. 102 goes slightly uphill in eastbound direction through the Rienztal/Valle della Rienza valley. Nearly at the end of the valley the path continues on the right side steep uphill to the alpine hut Langalm/Grava Longa.
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.