File:Woodchip Woodchip underground prep.png

Summary
This large twin-racer wood coaster can be less expensive than $25,701 to build if three shallow trenches are prepared, lowering the build cost to 21,593. Study the image for position and dimensions, entry to station 2x5x-1, speed matching dip 1x4x-1, deep dip 2x6x-4. Alternatively the easier to build but more expensive above ground build leaves room for paths, flat rides and shops.