fall inside a hole

Plarail Stacking Tunnel System (2006-)

In 2006 Tomy released the first of a few tunnel and dome accessories for the Plarail system that could be stacked and connected together. This system primarily consisted of translucent "domes" as well as subway-style tunnels. The sections are also compatible with Tomica Town curbs and other accessories.

Stacking tunnel accessories

Year Name Description Photo
2006 J-24 Clear Dome (Round) Straight track section with clear semicircle dome
2006 J-25 Clear Dome (Square) Straight track with clear rectangular tunnel that more domes can be stacked on  
2008 J-26 Underground Station Stacking, tiled subway station that fits in with the other subway tunnels  
2008 R-25 Underground Straight Rail Straight rail molded into a stacking combinable subway tunnel section

J-24 Clear Dome (Round) (2006)


In December 2006 the J-24 Clear Dome (Round) (J-24 クリアドーム(まるがた)) was released individually, first appearing in the Let's Connect a Lot! 700 Series Hikari Rail Star Set. It is designed to sit on top of the square-type dome as well as some large accessory bases like the Large Dome Station.

J-26 Underground Station (2007/2008)


First released in blue in the Subway Rail Set in December 2007, the individual J-26 Underground Station has a lighter grey upper section instead of blue and different stickers. The staircase will actually connect across three different stations, two connection in a row with a third below the second.

This station was exported in the Tomica Hypercity Super Big Set. This version is localized from the regular individual Japanese release with new stickers.

R-25 Underground Straight Rail (2007/2008)


In 2007 the Subway Rail Set included five straight rails integrated into columned subway tunnels which were then released individually as R-25 Underground Straight Rail (R-25 地下直線レール) in 2008.

The tracks and inside of the tunnel do have some nice detailing. The bottom is marked 2007 as well as 1959 which was something Tomy was doing around this time in the mid-late 2000s.

Several Plarail sets include these stacking accessories. Sets in my collection with stacking tunnels include...

Year Name Description Photo 
2007 Subway Rail Set A "track pack" with no train but a loop of track with six subway tunnels, one of which is a detailed station

Several of the Tomica Hypercity series export sets included these stacking pieces

Year Name Description Photo