construction digger Dirt excavator machine meadow tool tracked tracked vehicle vehicle car caterpillar road snow track tracks tractor wheel winter 4WD-vehicles beach churn churned-up churning coast coastline colors colours conservation conserve conserving damage damaged damaging driving dug-up environment environmental environmentally-unfriendly four-wheel-drive marked marks ocean ocean-edge off-road off-road-driving prints protect protection rough safety sand soft-sand surface surfaced surfaces tire-tracks traction tyre-tracks vehicles vehicles-permitted wild activity animals evidence footprints grainy impressed impressions imprinted imprints indented light park patterns paw-prints pedestrians shadow Soil textures vehicle-tracks walkers curved curving foot-prints gray grey over-printed tangled terrain texture textured cars competing competition competitors connected connections floor flooring floorspace fun games indoor-games indoors inside joined miniature miniature-cars miniature-racetrack model-cars model-vehicle-tracks models over plastic play race racing semi-circular setup space toy-cars toy-vehicles toys train-tracks under underpass wood wood-stain wooden abstract angled angles appearance caterpillar-track continuous-track continuous-tread-band mobility movement propulsion tank-tread track-plates vehicle-propulsion weight-distribution wheels World-War-2-tank-track WWII-tank articulated arm bucket build cab dig engine engineering vehicle heavy hole icon minning pictogram sign symbol work decay gravel industrial old rust workplace