Yes there’s a winery on the side of a Volcano, Kīlauea Volcano.
A brief history of the Volcano Winery.
It was established in 1986 on 15 acres of land at 4286 feet elevation above sea level. They have four standard wines, two premium wines and unusual wines called infusions of wine and tea with locally raised honey and one flavored with a unique nut found only in Hawaii; the Macadamia Nut.
source
I discovered this in a post by @shortsegments and these are his photos. Enjoy!
Lalai