According to the Diggers, the underground is also a refuge for former prisoners. It is against the law for ex-convicts to reside in the Russian capital, so those who do move to the city must find inconspicuous lodgings. Some settle in basements with good air-conditioning systems and two or three exits. Sometimes they gather in groups, living by "prison laws."
In a tunnel under the Centrobank building, the Diggers observed uniformed people in masks equipped with powerful halogen lamps. The Diggers were afraid to follow them lest they should come under fire. So far, security services have not taken the Diggers' reports of these sightings seriously.
Under the Skliffasovsky clinic the Diggers encountered people dressed in monk's robes, carrying torches around a strange-looking altar made of stone. They were performing some sort of service and singing. When they saw the Diggers, they hurriedly disappeared.
(via bOING bOING)