What happens when you make of your model railroad to access? A devise in this case called The Topside Creeper can be used “IF” you have isle space wide enough to maneuver and get it in place. Todays video shows me using the devise with my friend Andre Koneczny on Howard Zanes layout to access cleaning trackage entering the 66 ft long Mile Long Tunnel. In the case of my model railroad I did not make my aisles wide enough for a creeper so I cannot use one. When designing a model railroad consider access because if something goes bad or breaks you will need to get to it one day. I am available to maintain and or restore large model railroads and or displays enquire at alpug1@verizon.net