11 February 2025 The Future is the Product of the Past

Rock Ship of Masuda, Japan’s mysterious monolith

Located in the Takaichi District of Nara Prefecture, Japan, the village of Asuka is famous for its mysterious stones. The ancient origins of the village date back to the Tumulus period, also known as Kofun Jidai (c. 3rd century–538 C.E.).

Kofun Jidai period (AD 250–552) is characterized by a specific type of earth mound in the shape of a key and surrounded by moats. However, the area is known for its many Buddhist temples, shrines, and statues.

Stone monuments that do not match Buddhist-style sculptures or construction on the hills surrounding Asuka attracts curious visitors and explorers.

Masuda-no-iwafune (literally “Rock Ship of Masuda”, 益 田 岩 船 in Japanese), or Rock Ship of Masuda, is the name of the largest of these monuments.  Its function is still unknown and it is located atop a hill close to Okadera Station.  The largest of the mysterious rock mounds, the rock ship is made of solid granite and measures 11 meters (36 feet) by 8 meters (26 feet), 4.5 meters high (15 feet), and weighs approximately 800 tons as it stands.  It’s a carved mound, with two holes each about a meter square in the center, going through to the ground.

Photo: Kazu1000

The “rock ship” moniker is most likely due to its canoe-like appearance or location near Lake Masuda. However, as part of regional development, the nearby body of water has been drained.

The side of the slope facing the top has been smoothed at a 45-degree angle to the ground. Close to the ground, trellis-shaped chisel marks can be seen on the other three sides. These marks are most likely related to how the builders smoothed the surface of the rock. Because granite is notoriously difficult to carve (even with modern tools), this sculpture captivates experts and scientists who regard it as a technical marvel.

Masuda-no-iwafoune’s construction is said to be strikingly similar to that of another Japanese stone enigma, Ishi-no-Hden. Though it is now a shrine dedicated to the Shinto god shiko Jinja, no one knows who carved it or why, though it is thought to have two holes in the center, similar to Masuda-no-iwafune, though they aren’t visible.

Photo: Kazu1000

The most popular theory about the stone’s construction is that it was used as an astronomical observation point. Its orientation alignment with the slope suggests that the monolith may be linked with the Japanese lunar calendar (important for early agriculture) and to the first astronomical observations. However, some experts disagree with this.

Other historians contend that the rock designates a royal burial ground, of which only the entrance would have been finished at the time. This still doesn’t explain the unusual features of the structure.

With no conclusive information regarding the significance of this enigmatic stone spaceship, the whys, and wherefores of its existence remain a mystery to this day.

Cover photo: Wikimedia

Related Articles

Exciting discoveries at Accana Mound: 3,250-year-old seal belonging to Hittite prince and Akkadian cuneiform texts discovered

19 November 2021

19 November 2021

A 3250-year-old seal of the Hittite prince and a 3400-year-old cuneiform tablet was found in Accana Höyük (Mound) in the...

5000-year-old fingerprint found in Orkney pottery

23 April 2021

23 April 2021

Fingerprints were found on a pottery dating back 5,000 years in the Orkney archipelago, located in the northern region of...

An Etruscan Home Discovered in Corsica “First-Of-Its-Kind Find for the Island”

11 July 2024

11 July 2024

Archaeologists have discovered the first Etruscan domestic structure, dating to the 6th to 4th centuries BC, off the east coast...

2600-year-old Med period artifacts found in Oluz Höyük, in Turkey

17 October 2022

17 October 2022

During the Oluz Höyük excavations in Amasya, artifacts dating back to the Med Kingdom period were found, dating back to...

Ancient DNA Reveals Missing Link in the Origins of Indo-European Languages Spoken by 40% of the World

6 February 2025

6 February 2025

A study published in the journal Nature has genetically identified the origins of the Indo-European language family, which includes over...

Rare Elizabethan ship discovered at a quarry

2 January 2023

2 January 2023

An Elizabethan ship in “remarkable condition” has been discovered on the lake bed of a Kent quarry, one of only...

A 1,700-year-old trident discovered in Assos ancient city in Türkiye

10 October 2023

10 October 2023

An iron trident, believed to be used for fishing, dating to the 3rd or 4th century A.D. has been discovered...

Archaeologists Uncovered a Terracotta Commander and Warriors at the Mausoleum of China’s First Emperor

12 January 2025

12 January 2025

Archaeologists have unearthed a rare 2,000-year-old statue depicting a high-ranking military commander at the famous Terracotta Army site in China:...

6th-Century BC Houses and Earthquake Evidence Discovered in Davti Blur, an Urartian Fortress City in Armenia

28 January 2025

28 January 2025

An Armenian-Polish archaeological team has uncovered remnants of 6th-century BC houses, a cremation cemetery, and signs of a significant earthquake...

For the first time, researchers discovered bioarchaeological evidence of familial embalming in early modern France

16 November 2024

16 November 2024

A unique discovery has revealed new insights into the burial rituals of early modern Western Europe: For the first time,...

Archaeologists find sunken ancient Egyptian warship under Abu Qir Bay

26 July 2021

26 July 2021

According to a press release by the Egyptian Ministry of Tourism and Antiquities, the Egyptian French archaeological mission of the...

In the Mediterranean Oldest Hand-Sewn Boat is Preparing for its Next Journey

25 January 2024

25 January 2024

The oldest hand-sewn boat in the Mediterranean was discovered in the Bay of Zambratija near Umag on Croatia’s Istrian peninsula....

Archaeologists revealed Urartian King Menua second temple in Van excavations

22 December 2022

22 December 2022

The second temple of King Menua as well as a chamber tomb were unearthed during the excavations carried out this...

Rare African Script Offers Clues to the Evolution of Writing Systems

4 February 2022

4 February 2022

The world’s very first invention of writing took place over 5000 years ago in the Middle East, before it was...

Collectors In The Prehistoric World Recycled Old Stone Tools To Preserve The Memory Of Their Ancestors

16 March 2022

16 March 2022

A first-of-its-kind study at Tel Aviv University asks what drove prehistoric humans to collect and recycle flint tools that had...