Hallowmass returns to Summit Denver for two all-ages nights on October 30 and October 31.

This year’s featured movement, Mayat Ōm: Brief Creatures, turns toward grief, remembrance, and the improbable fact of existence itself. Hallowmass combines itchy-O’s large-scale musical and performative force with a participatory ceremonial environment of memory, offering, collective witness, celebration, and the unknown.

Participation is invitational. Guests may approach, witness, offer, or decline. No particular belief or emotional response is required.