Here's (what appears to be) a promotional photo of the Hanna-Barbera gang outside of the Yogi's Cave attraction at Canada's Wonderland, a sister park to Kings Dominion. I swiped the picture from the amazing Flickr feed of user Mr. Flintstone. Canada's Wonderland opened in 1981 in Ontario and featured similar attractions to those found at KD and Kings Island. By the time I made it to Wonderland in 1986, Yogi's Cave had been transformed into Smurf Cave. Of course, at the time, that was OK with me! Here's the write up about the Smurf attraction from Wikipedia:
A funhouse-like cave building that featured scenes of Smurfs in their "natural" habitat. This attraction was actually converted from Yogi's Cave in Yogi's Forest (1981–1983) before the area was changed to Smurf Forest for the 1984 season. Also featured near the end of the cave was a section of Gargamel's house where Gargamel would be playing his organ. Gargamel's house was formerly the Ranger's Cabin during its use in Yogi's Cave. Smurf Village was removed and replaced by an arcade until 1998 where it housed Meet-and-Greets with the Rugrats. Currently it functions as a gift shop and mini-arcade in the Zoom Zone area.