Lacuna

Dark inter-bubble space resembling an egg carton of sunken bubbles in varying states of intact or popped. Features a red glowing horizon and constant icy winds. Acts as the exterior void between contained bubble worlds.

Lacuna debuts in Dungeon Crawler Carl Book 4 as the enigmatic void separating the dungeon's bubble worlds, depicted as a dark, egg-carton-like expanse of sunken bubbles in varying states of collapse. This inter-bubble space introduces a red glowing horizon and relentless icy winds, establishing it as the perilous exterior environment that connects otherwise isolated realms. Its revelation expands the scope of the dungeon's architecture, suggesting deeper layers and transitions that will likely influence later crawler movements and revelations across the series.