... subways, gold mines, gold mills, cities, yards, mountains, rock formations, cliffs, animal scenes, nature scenes, human action ... ponds, streams, oceans, waterfalls, small towns, junctions, bridges, landscaping, nostalgia, docks, processing plants, tunnel portals, furniture factories, industries, lumber yards, distribution warehouses, refineries, farms, funny scenes, or from-the-movies scenes like our green slime ...