Comasine, a hamlet of the municipality of Pejo, is situated at 1,200 m a.s.l. amidst the meadows and forests of the valley. Until 1857 Comasine was the mining centre of this area which was particularly known as an iron extraction site, as well as for being the birthplace of Giacomo Matteotti's family. A commemorative panel created in honour of Giacomo Matteotti can be admired on the faҫade of the recently restored "Matteotti-Meneghetti" house near the church of Comasine.

The San Matteo church is famous for its wooden altars which were partially moved from the stunning Santa Lucia church. The most ancient of the 130 larch trees growing in the forest above Comasine at 2,100 m of altitude date back to 1365 AD.

From the village you can descend towards the valley floor by taking the road to "Forno di Novale", a settlement which throve as an iron melting site in former times.