2 level connected by a helix. Lower level Standard gauge Chinook Southern; upper level Chinook Southern and Poudre Valley 3ft. narrow gauge. Point to point. C.S. begins at Chinook yard and proceeds south to Frustration Flats yard. P.V. goes from Frustration Flats yard to Fairplay. Small steam engines with 36 and 40 foot freight cars traveling through Colorado mountains. Freelance.