I am in no way an expert on biomes or environments and these likely don't make sense! Sorry in advance for that
This is Alte’wegu, the magic planet of the Alternarian people, and it is a pretty creepy map but I need to make them for lore stuff, I will provide some info on the important locations here.

Atmagas: the big main city and melting pot of Alte’wegu, being an unfathomable big city originally built by the Omarasa to store the other aliens they had enslaved during their reign over the Alternarian planet, became a shining beacon of independence after the revolution.

The irradiated zone: once the biggest source of nuclear power in the whole galaxy, suffered a devastating meltdown, theorized to come about from sabotage, the whole area cracked open and the whole facility melted into the planet.

Frigid Bog/Klurdak: the frigid bog is a cold and tree-dense bog, with a noticeable warping presence, it is easy to go mad in this place, but somewhere in the middle of this bog you can find a hut inhabited by a friendly fish necromancer.
As for the city of Klurdak, it is one of the most horrid places to try and live, no one goes there if they can help it, as the Jarl and the many of her people have gone mad from the warping, she holds frequent executions and arena battles between randomly selected citizens, as well as a bi-annual festival of murder and revelry, the Jarls name has been lost, and most call her Heln La Klura, which means the Jarl of blood.

The unspeakable: it is unspeakable

Huminlijo: a large group of Guillo tribes which were being targeted by Omarasa slavers were transported here by the Alternarians to keep them out of their clutches, these Guillos ended up adapting to the environment, and the spirit of their planet even started to form here, it was once a cold Marsh, but the spiritual mutation turned it to a lush bamboo forest, the Guilliguines themselves also changed into the island Guillos.

Jat'fedran: it means "not snow" and I think that's funny.