Chicken tunnel - Michelle put pine shavings & diatematious earth in there to control moisture & any pests. Again, because it's raised above ground level, is pretty self-maintaining as far as cleaning is concerned. A good, healthy cycle.
not pretty but functional chicken chunnel or tunnel from barn to free range areas to protect from predators. My worst predator is coyote, who hunts as soon as it begins to be grey - best thing is teach them to get inside before sunset