An ancient kingdom covers a several rivers in a desert basin all converging on a central, hypersaline, lake. Because of its central location, and the importance of the salt, the lake has important religious and cultural significance. In particular, an island in the middle of the lake.
I thought about making the island the capital of said kingdom as a fusion of civil and religious power, but I ran into trouble of the feasibility of it. How would one get sufficient amount of water into middle of the lake?
- In war time. A capital that can withstand siege would be ideal - especially that it is very hard to assault, and a central location allows them to project force through 'army in being'.
- In peace time. Just as Rome was largely unprotected during its Empire, during a golden age, the capital might have been moved there for symbolic reasons.
The closest thing I come up with was either shipping it (probably too labor expensive in the Bronze Age for anything but the palace of the god king) or create a juicy plant which either is farmed on the lake or on land (but probably hypersaline lakes are too salty and I don't know how much farmland would need to be used).
Does Bronze Age civilization have the means to obtain water for a large city in the middle of the hypersaline lake and, if yes, how would they obtain it?