After crossing the rivers on my way to the coast from Yukuhashi I spied this line of statues leading up the hillside.
The sign said it was number 61 on the "new" 88 sites Kyushu Pilgrimage. The 88 temple Kyushu Pilgrimage I was walking was founded in 1985, so I guess this one must be much newer.
It is not a registered temple of any kind, rather a site used by Yamabushi for ascetic practises. There was one small building with a large altar with this Fudo enshrined.
Several other Fudo statues were around the grounds too... both this large stone Fudo and the small Jizo had fresh new year offerings.