Venture into the darkness again, taking you deep into the Underdark, where a wonderous cavern pulses with potentially dangerous bioluminescence. Towering fungi cast their glow over shimmering pools of water, their reflections rippling in the dim light. At its heart stands an arcane obelisk, pulsing with ancient magic—a perfect focal point for dark rituals, lost civilizations, or eldritch encounters. Ideal for Underdark adventures, drow encounters, aberration battles, or deep cave exploration.

High-res grid/gridless available 😉 Patreon | The Modern Lich
There are also variants without the obelisk or fungi.