A second shrine on the grounds

 On the grounds of Jiroku Shrine, there is a second torii and a very small stone shrine. I assume that the name of this shrine is written on the rectangular plate between the two horizontal parts of the torii, but I could not read them because of the weathering. You can see the actual shrine behind the torii on the right.

The entire structure is only a little taller than me and contains some stones. The two doors on the left are to a storage shed or more likely toilets, but I did not investigate.