Four decades after Lake Nyos unleashed a silent, suffocating mist of carbon dioxide, enduring trauma and regional conflict continue to haunt surviving villagers.
The tragedy struck overnight on August 21, 1986, when a massive, odorless cloud swept through the surrounding valleys.
The dense gas displaced oxygen instantly, smothering nearly 1,700 residents and thousands of livestock in their sleep.
Scientists later identified the rare phenomenon as a limnic eruption, triggered when trapped subterranean gases suddenly burst upward.
The tragedy echoed a smaller incident at nearby Lake Monoun two years prior, which killed 37 people.
Engineers subsequently installed degassing pipes to drain the carbon dioxide slowly and neutralize the immediate risk.
Researchers confirm the lake is now safe, but lingering fear keeps many displaced survivors from returning.
Long-term resettlement programs remain severely disrupted by the ongoing Anglophone crisis in the Northwest region.
Violent clashes between military forces and separatist groups make accessing the ancestral lands hazardous for scientific teams and refugees alike.