The Rygyphae are a species that lives in the geothermal pockets, areas heated by volcanic activity. The rest of the planet is nothing but frozen ice and rock, but these pockets are lush jungles full of thriving life.

**Is this feasible? Do these geothermal pockets have everything they need for ecosystems like this to form in them?**

It is my understanding that a planet orbiting a black hole receives only light, and no heat, so therefore if the heat is supplied by volcanic activity, then jungles should be able to grow, right?