Like all urban legends, the story behind the Donkey Tree changes slightly depending on who is telling it. Along with the background, the consequences of visiting the cursed tree also change from person to person. But, here's the gist:
There was once a farmer who was especially cruel to his donkey, and would often beat the animal severely. One day, the farmer took it too far and beat the animal to death. Atop the site where the donkey died (or was buried) grew what is today known as The Donkey Tree.
Visitors to the spooky tree, which does closely resemble a donkey, believe that the tree is cursed. It is said that anyone who touches the tree will have bad luck. Some believe that touching the tree will result in the person being in an accident, and some even say that its a death sentence. On the flip side, putting an apple in the 'donkey's' mouth is considered good luck. If you do put an apple in its mouth and then leave, you'll find that the apple has mysteriously disappeared by the time you get back.
According to the Donkey Tree Facebook page, in October 2014, people began contacting the admins of the site to report that they were hearing the sounds of a child laughing or crying near the tree between the hours of 11 p.m. and 3 a.m. Even stranger, the Facebook page mentions that an abandoned car was found in front of the Donkey Tree in September of 2015. The car allegedly belonged to a YouTuber from Indiana who was visiting the area to shoot a documentary for his channel. No updates were ever posted, and I couldn't find any additional information on this case.
Having said that, if you're still brave enough to visit the Donkey Tree yourself, it's located on Valley Hill Road in Springfield, KY. Roadside America gives the following directions:
Directions: From Springfield drive north on Hwy 55/Bloomfield Rd. Just past the nursery on the left, turn left onto Valley Hill Rd. The tree is on the left, just past the little one lane bridge.
*Kentucky has donkey trees...West Virginia has men's faces in rocks. It's all thanks to the wonders of Pareidolia! Learn more about pareidolia at the link provided!*