C415 Thousand-year-old Stonecrop

Under the dark sky, a cove was emitting a green light.

The green light looked terrible, but I knew it was just phosphorescent.

Phosphorus fires were the rotting wood and animal corpses. They usually contained phosphorus. Phosphorus would ignite when it reacted with oxygen in the air. After burning, it would emit a green light.

Sometimes, in the deep mountains and in the old forest