#structural tomb
- Arcosolium — An arched burial niche carved directly into the rock wall of early Christian catacombs or ancient tombs, located above a flat grave covered by a horizontal slab. In a structural-architectural sense, the arcosolium served both a decorative role, often acting as a surface for fresco paintings with allegorical Early Christian motifs, and a structural load-bearing role for the vault, typically reserved for high-ranking figures or martyrs.