Amber is the cornerstone of mantid society. They use this material in their architecture, their art, and their technology. Masters of sound, the mantid long ago found a way to use amber to extend the range of their acoustic casting. In this way they are able to communicate over vast distances. No army has successfully marched on mantid lands undetected, and even lone travellers are urged caution as their movements are no doubt being watched the moment they venture beyond the wall. The Empress and her council of Klaxxi safeguard the great trees of Townlong Steppes - the "kypari" they are called - as the only source of their precious amber. Legend has it that the kypari once flourished east of the wall, but the mogu cut them all down in their never-ending war against the mantid swarm.