Salusa
Salusa is a fictional planet featured in Frank Herbert's Dune series. It is known as the prison planet of the Imperium. The harsh conditions on Salusa Secundus make it an ideal place to train individuals for extreme resilience and survival. Those who manage to endure life on Salusa Secundus are often hardened and exceptionally capable, making them valuable assets, particularly to military or intelligence organizations.
The planet's environment is characterized by extreme heat, sandstorms, and dangerous native lifeforms. Survival requires constant