The Grave of BBB was located under an artificial island in the center of the Marine Chain.

BBB's friends had become nothics due to overexerting themselves during the isolation, attempting to cast spells beyond their abilities. She entombed her friends along with a beholder named Samuel who had been instructed to guard them and keep them alive until BBB returned with the means to cure them.

The oldest known lighthouse in the world, located on the Marine Chain. Signica can be seen for over 500km and served in old times to mark the middle of the rocky shallows at the center of the Marine Chain. Its architecture is not consistent with any currently existing culture.