Turtle-back tombs or turtle shell tombs (simplified Chinese: 龟壳墓; traditional Chinese: 龜殼墓; pinyin: guī ké mù; Pe̍h-ōe-jī: ku-khak-bōng; Japanese: 亀甲墓, kamekōbaka) are a particular type of tombs commonly found in some coastal areas of China's Fujian Province, and in Japan's Ryūkyū Islands.
In the Chinese version, the tomb itself is made to look like the carapace of a tortoise, the vertical tombstone with the name of the deceased being put where the tortoise would have had its head, at the end of the grave where the feet of the buried body are. The tomb is surrounded by an Ω-shaped ridge, with its opening on the side where the tortoise's head would have been, and where the tombstone is.
According to J.J.M. de Groot, the main purpose of the horseshoe-shaped, or, more frequently, Ω-shaped ridge surrounding the tomb is to substitute for a range of hills ridge which, according to the principles of feng shui, needs to protect the grave from the "noxious winds" from the three sides – the situation that is rarely naturally obtainable.
The tumulus over the tomb naturally has somewhat turtle-like shape, considering the large size of a traditional Chinese coffin, its shape, and the shallowness of the grave. However, the tumulus is often actually covered with plaster (or, these days, concrete), decorated in such a way as to remind one of the pattern seen on a tortoise shell.
It is commonly said that the tomb imitates the shape of a tortoise due to those animals' longevity, thus promising long life to the descendants of the deceased. It has been suggested (among others, by J.J.M. de Groot) that the custom of building turtle-shaped tombs may also have to do with the desire to place the grave under the influence of the heavenly warrior Xuanwu, whose symbol is the Black Tortoise.
A legend has been recorded which ascribes to tortoises the ability to find an auspicious place for a burial. According to the legend, some time during the Xiangfu era, a man in Guangdong who was looking for a suitable (in feng shui terms) place to bury one of his parents on a certain mountain learned that ten days prior several dozens of tortoises had brought a large dead tortoise to a certain spot and buried him there. The man found the tortoise's grave, reburied the reptile elsewhere, and used the spot to bury his own parent. Accordingly, he then had three sons born to him, two of whom earned the jinshi degrees, and all three were to occupy high positions in the Song establishment.
When considering the turtle motif in tomb constructions, some authors link it with the general symbolism of a turtle in the ancient Chinese culture, with its flat plastron below and its domed carapace above, representing the shape of the universe. Throughout China, for almost two millennia stone turtles, which became known as bixi, have been holding memorial stelae near graves of emperors and dignitaries;  however, unlike Fujian's turtle-back shaped tombs, bixi turtles are not placed directly above the grave. (And, unlike bixis, turtle-back graves don't have tablets standing on top of them).
When discussing the connection between the turtle/tortoise symbolism and burial practices, some authors even remember the custom of eating a variety of the traditional sweets, the red turtle cakes, at funeral feasts.
|Turtle-back tombs in Lingshan Islamic Cemetery, Quanzhou|
In the Ryūkyū Islands
The turtle-back tombs are thought to have been introduced into the Ryūkyū Kingdom from Fujian in the late 17th or early 18th century ("in the interval between the careers of Shō Shōken and Sai On", according to Gregory Smits' monograph on the intellectual history of the Ryūkyū Kingdom. Some authors give earlier dates; in particular, the tomb of Gosamaru (d. 1458) is often described as the first Ryūkyūan turtle-back tomb.
As of the mid-20th century, the turtleback tomb became the predominant tomb style in some parts of the Ryūkyū Islands. E.g., this was reported in Kabira Village (near Kabira Bay) in Ishigaki Island. Unlike single-person turtleback tombs of Fujian, the turtleback tombs of Ryūkyū were more of a burial vault, where bones of many generations of a particular family could repose. Typically, the coffin with the body of a deceased member of the family would stay in one part of such a tomb for some years (3, 5, 7, or 9). After the body would have decomposed, the bones would be washed by young female relatives of the deceased, placed into a large earthenware jar, and stored elsewhere in the tomb.
In a fictionalized description of a turtleback tomb in the eponymous novel by Tatsuhiro Oshiro (where much of the action happens inside such a tomb), the tomb's floor space is 150 square feet. Inside the tomb, urns with the bones of deceased ancestors stand on multiple rows of stone shelves, in the order of seniority. The doorway of the tomb is closed with a massive stone, serving as a door.
In the spring of 1945, during the Battle of Okinawa, many Okinawan civilians sought refuge from the naval bombardment of the island inside their ancestors' turtle-back tombs, just like the characters of Oshiro's short novel. Later, many of these tombs were also used by the Japanese defenders of the islands. The image became iconic enough for a local novelist, Tatsuhiro Oshiro, to name a novel after these turtle-back tombs. (Kame kōbaka, 1966).
Fighting for the turtle-back tombs is mentioned in the accounts of American soldiers as well.
Notable turtle-back tombs
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- de Groot 1892, pp. 1082–1083
- Allan H. Smith (Apr 19, 1960), The Culture of Kabira, Southern Ryūkyū Islands, Proceedings of the American Philosophical Society 104 (2): 134–171 JSTOR 985656 (pp. 170–171).
- de Groot, Jan Jakob Maria (1892), The Religious System of China III, Brill Archive, pp. 941–942
- 李永球 (Li Yongqiu) (2010-03-07), 各籍貫墳墓造型 (In every land, its own kind of graves), Sin Chew Daily
- de Groot 1892, pp. 980–981。 De Groot quotes and translates the legend from 補筆談 ("Additions to the Pencil Gossip"), Chapter (quan) 3. The location mentioned in the legend, Liangzhou (廉州) is near today's Beihai, Guangxi.
- Watson, James L.; Rawski, Evelyn Sakakida (1990), Watson, James L.; Rawski, Evelyn Sakakida, eds., Death ritual in late imperial and modern China, Volume 8 of Studies on China, University of California Press, pp. 105–106, ISBN 0520071298. On the shape of the turtle, Watson and Rawski quote Burkhardt, Valentine Rodolphe (1959), Chinese creeds & customs 1, South China Morning Post, ltd., p. 126. This theme, going back all the way to the Shang Dynasty, is discussed in detail in Allan, Sarah (1991), The shape of the turtle: myth, art, and cosmos in early China, SUNY series in Chinese philosophy and culture, SUNY Press, ISBN 0791404609
- de Groot, Jan Jakob Maria (1894), The Religious System of China II, Brill Archive, pp. 451–452
- Smits, Gregory (1999), Visions of Ryukyu: identity and ideology in early-modern thought and politics, University of Hawaii Press, p. 83, ISBN 0824820371
- Gladys Zabilka, ed. (1959), Customs and culture of Okinawa, Bridgeway Press, p. 145
- Gosamaru's tomb
- Oshiro, Tatsuhiro (2000), "Turtleback Tombs", in Molasky, Michael S.; Rabson, Steve, Southern Exposure: Modern Japanese Literature from Okinawa, University of Hawaii Press, pp. 113–155, ISBN 0824823001
- Molasky, Michael S.; Rabson, Steve (2000), "Introduction", in Molasky, Michael S.; Rabson, Steve, Southern Exposure: Modern Japanese Literature from Okinawa, University of Hawaii Press, p. 21, ISBN 0824823001
- Paul E. Steiner (Apr 1947), Okinawa and Its People—II, The Scientific Monthly 64 (4): 306–312 JSTOR 19369 (p. 311)
- Turtle-back tombs, a "scrap-book" based on photographs and letters of Corporal Joseph P. Pizzimenti, as well as various published articles.
- See image 23 in 厦门集美游记 (Xiamen's Jimei trip notes)
- The monument for Tan Kah Kee