Holly Hulen, the daughter of the owner, Linda Speckels, told ABC News why her mother is selling the property.
"My mother is 73 and she and my father built that business," Hulen said from Arizona. "My father passed away over 20 years ago. She's been running it herself, and she’s ready to retire. She’s ready to enjoy her grandkids and not worry about managing a business."
The property is not to be confused with the similar Bedrock City in Custer, South Dakota, which opened in 1966 and is managed by a distant cousin of Hulen's. Hulen's father and grandfather worked for the property in South Dakota before moving to Arizona to build the second property.
"I believe that it provides a lot of opportunity for somebody," Hulen said.
"Thirty acres offers plenty of room to grow," the brochure states. "This unique property has unlimited potential."
Besides a green brontosaurus with a tail people can slide down, the property includes "a 3,800-square-foot residential housing that offers two separate living areas, two kitchens, four bedrooms complete with vanity sinks, and two-and-a-half baths."
According to the brochure, "This would provide excellent employee housing."