A subterranean prison complex, meant to incarcerate those who need to be removed from society.
You are sailing along the sea when you see a lighthouse in the deep blue middle. It is a lone light house, built on a rock not much larger than the tower itself. It is an oddity.
Cheza Betaze is the 17th Nekron urban area found in the Northern Cascades. The reasons why it is the best known of all Nekron cavern cities is that is has an easily accessible surface entrance/ exit which is just off the main Cascade trade trails. Being of recent construction in a time of prosperity, it is a city the Nekron feel proud off.
A secret MLM (pyramid) company that offers eternal life, but in fact it transfers the life forces of its members to those position "above". If you get high enough, (meaning you get enough new members) you start to enjoy the benefits. Maybe a willing sacrifice is much more effective for the transfer. But no one says, that a suddenly unwilling member, threatening to tell the authorities, may not loose it involuntarily... thus start people to vanish, and aged corpses are deposited somewhere safe.