Collected from many places in Japan, a part of these rocks was used to decorate the shores of the lake, while another part was used to create a magnificent stepping stone pathway called Iso-watari, which crosses a part of the lake.
In the background, you can also see the teahouse, built in 1909 for the visit of Herbert Kitchener, which was received as a national guest.
EXIF info:
Nikon D90
Lens: VR 18-55mm F/3.5-5.6G
Focal Length: 22mm
Aperture: F/5.6
Shutter Speed: 1/500s
ISO Sensitivity: ISO 200