kuroppoi

Air                               =    0 = air
Empty                             =    1 = base/empty
Earth Backdrop                    =    2 = base/earth
Sandstone Backdrop                =    3 = base/sandstone
Limestone Backdrop                =    4 = base/limestone
Maw                               =    5 = base/maw
Culvert                           =    6 = base/pipe
Plugged Maw                       =    7 = base/maw-plugged
Plugged Culvert                   =    8 = base/pipe-plugged
Ocean                             =    9 = base/water