Asuka is a village located in Takaichi District, Nara Prefecture, Japan.
Asuka is the land where ancient Asuka palaces were located.
Asuka is famous that there are unusual carved granite stones in various parts of the village.
Kameisi or "Tortoise Stone" is a giant natural granite stone which has been sculpted in the form of a smiling tortoise.
Legend tells us that before the tortoise stone faced north, now it faces southwest, and if the tortoise should face west, Yamato will sink in the muddy ocean.