Gnarled Huge Oak Tree - Smaller. Another model created in Google SketchUp and exported to Trainz with RubyTMIX. The effective system load of this asset is 17857 polygons (17557 from geometry, 300 from textures). This is an oversized item intended for use with garden railway routes. The original model was found on 3dwarehouse.sketchup.com and brought into Trainz using the RubyTMIX tool after some basic modifications (enlargement mostly) but otherwise unchanged. Original model Huge low poly oak tree by Eneroth 3