Foundation of the Tsilibinsk Monastery
Demetrius founded the Archangel Tsilibinsk wilderness monastery, situated in territory that later fell within the Vologda diocese. As part of this foundation he built a church dedicated to the Archangel Michael, intended to serve the newly converted population of the region.
Beneath the church he dug out a cave, where, according to the synaxarion, he lived for a long time in solitude. This pattern of pairing a community church with a hermit's cell reflects the wilderness monasticism characteristic of the northern Russian forests in this era.