@exiliaex @jannuary Assuming similar naming conventions to the darknet, dark rail would be rail stations which can only be accessed if you have a special key or authorization, one which isn't publicly available, and connecting you to sites which are hidden to the casual observer.
There are secret places which can only be accessed through the Dark Rail, through paths which are hidden from the casual observer. What occurs in these obscure locations? No one who knows is saying.
After all, one can only acquire forbidden knowledge for themselves. To pass it on to one who is not ready can only lead to rejection and pain.