Abstract
The ancient dugout canoe, Marukibune in Japanese, was found in the late Holocene peat deposits in Tako not far from Yohkaichiba, Chiba Prefecture. The radiocarbon dating of the peaty sand material from the horizon of the ancient dugout canoe indicates that it dates back to 3, 470±120 years B. P. (GaK-6275), which corresponds to the Later Jomon Period. The pollen assemblage of the same horizon suggests that a warm temperate forest covered surrounding hills, and that the peaty sediments and the ancient dugout canoe were deposited at the bottom of a freshwater lake or in swampy environment.
