i have explored the restricted zones before the stations open
and yes, there are a lot of passageways.
for e.g., for outram park, B2 is where the generators and CD
shelters are. B2037 is the generator room. there is nothing on
B1.
woodleigh, there is a level lower than platform.
dhoby ghaut, NEL platform is officially known as B5.
if u have used the emergency staircases, u can see every level.
nice.
