World file
Nalthis
The Nalthis page gathers its physical environment, climate, biosphere, habitats and unresolved research questions.
- Planetary system
- Nalthian system
- Physical scale
- Rocky planet with one known moon

Geology and terrain
A partly mapped continental world
The known surface includes mountain belts, an inland sea, islands and extensive lowlands. Active plate tectonics suggest a dynamic interior, although much of the planet remains unmapped.
Climate and atmosphere
Humid lowlands and seismic zones
The known jungle climate is concentrated in Hallandren, while surrounding mountains and northern regions are cooler and drier. Earthquakes are frequent around the inland sea and coast.
Biosphere
A rich but unevenly documented biosphere
Jungles support panthers, parrots, monkeys and crocodiles. The Bright Sea contains fish, mussels and tentacled organisms, while southern fauna is still uncertain.

Habitats
Jungle coast, mountains and inland waters
The strongest habitats cluster around jungle coasts, river-fed lowlands and the inland sea. Mountain regions provide minerals and create ecological boundaries.
Open questions
A world known through one region
The southern continents, the complete oceanic food web and several unusual plant distributions remain open areas of research.