Sokinoya Shrine is listed in the Engi Shiki so it is at least 1,000 years old. It's located at the base of the hills south of Naoe in Hikawa.
Halfway up the steps is the store room holding the rather elegant mikoshi and other valuable equipment.
The main kami enshrined is Kihisakamitakahiko, and there is absolutely no information on him except that this area was once called Kihisa so he was probably the leader of the area. This rock in front of the shrine is reputed to be where he stood and prayed in the direction of Izumo Taisha across the plain below.
Visible behind the rock is a small shrine to Sarutahiko. It was moved here from its original site at a large rock outcropping further up the mountain. There is also a Kumano Shrine in the grounds.
For me, the most interesting secondary shrine in the rounds is the Karakuniidateho shrine. Karakuni means "from Korea", and there are numerous Karakuni shrines around Izumo and Iwami that enshrine Susano and his son Isotake that are manifestations of the legend/myth that Susano and his son arrived here from the Korean peninsular.