The SubNay (a portmanteau of “subway” and “Bnay”) is the underground transit authority exclusive to the Bnay world. The SubNay exists near bedrock and provides underground rail service to (random) exploration sites in Bnay. As it is well-lit, it is entirely safe. (However, this is not an official statement as there is no guarantee at the moment; SubNay is not liable for any losses or injuries resulting from the use of the SubNay system.) The SubNay is currently under construction, so there is currently limited access to the surface, and there are no stations at the moment.