The Zeroth Training Ground (第零演習場, Daizero Enshūjō, English TV: Training Ground Zero), also known as the No-Hunting District (禁猟区, Kinryōku), is a wildlife preserve for rare and unusual animals. A team led by Kotetsu Hagane consisting of Naruto Uzumaki, Shino Aburame, and Rock Lee were sent into this field to recapture Condor.
Much like the Forest of Death and other training fields, this one is surrounded by large wire mesh fences, bearing many signs forbidding entry. The interior of the training field consists of a forest containing many insectivorous plants, wide open plains with few trees and a cliff that was used for dramatic effect.
According to Tsunade, the Zeroth Training Ground was originally used for the Chūnin Exams just like the Forty-Fourth Training Ground, but this was discontinued because when she was a child, the field was turned into a nature preserve. This made its modern ecology impossible to predict.