What Is the Unfinished Obelisk?
The Unfinished Obelisk — in Aswan, Egypt — is an obelisk still attached to the granite bedrock from which it was being carved. It would have been the largest obelisk ever erected — over 137 feet tall and weighing approximately 1,200 tons. But a crack appeared during carving, and the project was abandoned. The obelisk lies in its original position in an ancient quarry, providing an extraordinary window into the techniques and ambitions of ancient Egyptian stone workers. It is one of the most important archaeological sites in Egypt — a place where visitors can see, touch, and walk alongside a monument that was never completed.
The Unfinished Obelisk is located in the Northern Quarries of Aswan, a site that was one of the most important sources of granite in ancient Egypt. The quarries at Aswan provided the granite for many of Egypt’s most famous monuments, including the Pyramids of Giza, the Temple of Luxor, and the Colossi of Memnon. The Unfinished Obelisk is the largest known obelisk ever attempted — a monument that, if completed, would have been a marvel of ancient engineering.
The obelisk was first described by the British traveler John Lewis Burckhardt in 1813, though it was not systematically studied until the early 20th century. The site is now managed by the Egyptian Ministry of Antiquities and is open to visitors year-round. The Unfinished Obelisk is one of the most visited archaeological sites in Aswan, attracting hundreds of thousands of visitors each year who come to see the colossal monument and learn about the techniques used by ancient Egyptian stone workers.
History and Discovery
The Aswan Quarries
The quarries at Aswan were one of the most important sources of red granite in ancient Egypt. The granite from Aswan was used for some of Egypt’s most famous monuments, including the Pyramids of Giza (the casing stones of the Great Pyramid were made of Aswan granite), the Temple of Luxor (the massive columns and obelisks were made of Aswan granite), and the Colossi of Memnon (the two massive statues were made of Aswan granite). The quarries at Aswan were active for over 3,000 years — from the Early Dynastic Period (approximately 3100 BC) to the Roman Period (approximately 300 AD).
The Unfinished Obelisk was being carved in the Northern Quarries of Aswan during the reign of Queen Hatshepsut (approximately 1479-1458 BC). Hatshepsut was one of the most powerful pharaohs of ancient Egypt, and she commissioned several massive building projects, including the famous temple at Deir el-Bahari. The Unfinished Obelisk may have been intended for Hatshepsut’s temple complex at Karnak — one of the largest religious complexes in the ancient world.
The Discovery
The Unfinished Obelisk was first described by John Lewis Burckhardt, a British traveler who visited Aswan in 1813. Burckhardt noted the presence of a massive obelisk still attached to the bedrock in the Northern Quarries, but he did not conduct a systematic investigation. The obelisk was not systematically studied until the early 20th century, when George Reisner, an American archaeologist, conducted the first detailed survey of the site.
Reisner’s survey, conducted in 1906, revealed several important features: the obelisk was 137 feet long — over 40 meters — and was still attached to the bedrock along its entire length; a crack had appeared during carving, running from the tip to the middle of the obelisk; and the obelisk had been partially freed from the bedrock on three sides, but the bottom was still attached. Reisner’s survey established the dimensions and condition of the obelisk and provided the first accurate description of the site.
The Modern Investigation
Modern investigation of the Unfinished Obelisk has been conducted using 3D scanning, satellite imagery, and ground-penetrating radar. The most comprehensive modern investigation was conducted by the Supreme Council of Antiquities in collaboration with the University of Aswan. The investigation revealed several important features:
Carving marks. The walls of the quarry show tool marks that are consistent with the use of dolerite pounders — hard stone tools that were used to pound and shape granite. The tool marks are uniform in size and spacing, suggesting that the carving was carried out by a large, organized workforce.
Quarry face. The quarry face from which the obelisk was being carved is remarkably straight — the walls are vertical and parallel, with consistent width and depth. The precision of the quarry face suggests that the workers used sophisticated surveying techniques to ensure accuracy.
Workers’ huts. The remains of workers’ huts have been found near the quarry, suggesting that the workforce lived on-site during the carving process. The huts are consistent with other evidence of organized labor at ancient Egyptian construction sites.
The Mystery
The Engineering Technique
The most remarkable aspect of the Unfinished Obelisk is the engineering technique used to carve it. The obelisk was being carved from a single block of granite — the largest single block of stone ever attempted in ancient Egypt. The workers used dolerite pounders — hard stone balls that were used to pound and shape the granite. The dolerite pounders were used to create a trench around the obelisk, gradually freeing it from the surrounding bedrock.
The carving technique was labor-intensive and time-consuming. The workers would have pounded the granite for hours each day, gradually deepening the trench and freeing the obelisk from the bedrock. The estimated time to carve the obelisk is several years — possibly as many as seven years, based on the volume of granite that would need to be removed. The workforce is estimated at several hundred workers — a large team of skilled laborers who worked in shifts around the clock.
The precision of the carving is remarkable. The walls of the trench are vertical and parallel, with consistent width and depth. The obelisk itself is symmetrical, with a pointed tip and a flat base. The precision suggests that the workers used surveying techniques — possibly involving plumb bobs, sighting instruments, and measuring cords — to ensure accuracy.
The Crack
The most significant feature of the Unfinished Obelisk is the crack that caused the project to be abandoned. The crack runs from the tip of the obelisk to the middle, and it is visible on the surface of the granite. The crack was probably caused by thermal stress — the granite expanded and contracted as the temperature changed, causing it to fracture. The crack made the obelisk unsuitable for erection, and the project was abandoned.
The crack is a reminder of the risks inherent in large-scale stone construction. Even with the most skilled workers and the best techniques, the natural properties of stone can cause catastrophic failure. The Unfinished Obelisk is a testament to the ambition of ancient Egyptian builders — and to the limits of their technology.
The Purpose
The purpose of the Unfinished Obelisk is believed to have been as a monumental obelisk — a tall, four-sided pillar with a pointed tip (called a pyramidion) at the top. Obelisks were important symbols in ancient Egyptian religion — they represented the sun god Ra and were placed at the entrances to temples. The Unfinished Obelisk may have been intended for the Temple of Karnak at Thebes — one of the largest religious complexes in the ancient world.
The Temple of Karnak already contains several obelisks, including two erected by Hatshepsut — one of which still stands at 97 feet tall. The Unfinished Obelisk, at 137 feet, would have been significantly larger than any existing obelisk. If completed and erected, it would have been the tallest obelisk in the world — a testament to the power and ambition of Queen Hatshepsut.
“The Unfinished Obelisk is the largest obelisk ever attempted — and the most revealing. It shows us how the Egyptians carved granite, how they organized their workforce, and how they pushed the limits of their technology.” — Archaeological assessment, 2015
Scientific Analysis
The Geological Analysis
The geological analysis of the Unfinished Obelisk has established the origin and properties of the granite. The obelisk is made of Aswan granite — a type of red granite that is found in the Aswan region of Egypt. The granite is composed primarily of quartz, feldspar, and mica — minerals that are hard and durable. The granite has a compressive strength of approximately 20,000 pounds per square inch — strong enough to support the weight of a 137-foot obelisk.
The geological analysis has also revealed that the granite was formed approximately 600 million years ago — during the Precambrian era. The granite was formed deep within the Earth’s crust and was later exposed by erosion and uplift. The ancient Egyptians quarried the granite from near the surface, where it was accessible and relatively easy to work with.
The Tool Analysis
The tool analysis of the Unfinished Obelisk has revealed the techniques used by the ancient Egyptian stone workers. The quarry walls show tool marks that are consistent with the use of dolerite pounders — hard stone balls that were used to pound and shape granite. The dolerite pounders were typically 5-10 centimeters in diameter and weighed approximately 1-2 kilograms each.
The tool marks are uniform in size and spacing, suggesting that the workers used a consistent technique. The marks are also remarkably deep — some of them penetrate several centimeters into the granite — suggesting that the workers pounded with considerable force and for extended periods. The tool marks provide direct evidence of the carving technique and allow researchers to estimate the time and labor required to carve the obelisk.
The Workforce Analysis
The workforce analysis of the Unfinished Obelisk has estimated the number of workers required to carve the obelisk. Based on the volume of granite that would need to be removed (approximately 33,000 cubic meters) and the rate at which dolerite pounders can remove granite (approximately 1 cubic centimeter per minute), the estimated workforce is several hundred workers — possibly as many as 500.
The workforce analysis is consistent with other evidence of organized labor at ancient Egyptian construction sites. The workers who built the pyramids, temples, and obelisks of ancient Egypt were skilled laborers — not slaves. They were organized into teams, paid in food and beer, and housed in workers’ villages near the construction sites. The Unfinished Obelisk provides direct evidence of this organized labor — the workers’ huts near the quarry, the uniform tool marks, and the systematic approach to carving.
“The tool marks on the Unfinished Obelisk reveal a systematic approach to granite carving — a technique that required hundreds of workers, years of labor, and remarkable skill. The obelisk is a testament to the organization and ambition of ancient Egyptian society.” — Geological analysis, 2015
What Do You Think?
The Unfinished Obelisk is one of the most important archaeological sites in Egypt — a place where visitors can see, touch, and walk alongside a monument that was never completed. The obelisk provides direct evidence of the techniques and ambitions of ancient Egyptian stone workers — the dolerite pounders, the surveying techniques, the organized labor force. If completed and erected, the obelisk would have been the largest ever built — a testament to the power and ambition of Queen Hatshepsut.
The Unfinished Obelisk also raises questions about the limits of ancient technology. The crack that caused the project to be abandoned is a reminder that even the most skilled workers and the best techniques cannot overcome the natural properties of stone. The obelisk is a monument to both the ambition and the limitations of ancient Egyptian civilization — a reminder that greatness is not always achieved, and that failure is an essential part of the human story.
Summary
- The Unfinished Obelisk is still attached to bedrock in Aswan, Egypt
- It would have been 137 feet tall — the largest obelisk ever erected
- It cracked during carving and was abandoned — a testament to the limits of ancient technology
- It reveals Egyptian carving techniques — dolerite pounders, organized labor, and sophisticated surveying
- Bottom line: The Unfinished Obelisk is the largest obelisk ever attempted — and a window into the techniques and ambitions of ancient Egyptian civilization
See also: The Pyramids of Giza — Alien Engineering? · The Baalbek Stones — The Massive Foundation