An old well. It doesnt look much but have learned a lot from this one. Texture on the walls is hand mapped. Rope is modelled, I wrote a script to roll the rope. Both path and a movement animation is used to animate the rope. Water surface is animated as well. Roboman is for size reference. Without the rope and subdivisions whole setup is around 9k trigs. 

Stone texture:
http://opengameart.org/content/pietextureset