Hachimanyama Kosenji Temple is at the eastern end of the Ebino Valley in the higjlands around the Kirishima Montains in Miyazaki. It is number 42 on the 108 Shingon temple pilgrimage on Kyushu.
It is a fairly modern temple founded in the early Taisho era, so is about 100 years old. I'm no expert, but it seems that the Gingko trees were a little older than that.
It has an unusual hnzon, a statue of Dainchi riding a cow, though I didn't get to see it. Also unusual for the Kyushu pilgrimage is an actual Daishi-do.
There was quite a bit of interesting statuary which I will post on later, and also one building had quite a few masks on display, severa; of which were from the Iwami Kagura tradition.