One idea is that the statues, created between 1400 and 1200 B.C., were meant to be part of a monument for a sacred water spring, the researchers said.
The lifelike lions were created by the Hittites who controlled a vast empire in the region at a time when the Asiatic lion roamed the foothills of Turkey.
"The lions are prowling forward,their heads slightly lowered; the tops of their heads are barely higher than the napes," write Geoffrey Summers, of the Middle East Technical University, and researcher Erol Özen in an article published in the most recent edition of the American Journal of Archaeology.
The two lion sculptures have stylistic differences and were made by different sculptors. The lion sculpture found in the village of Karakiz is particularly lifelike, with rippling muscles and a tail that curves around the back of the granite boulder.
"The sculptors certainly knew what lions looked like," Summers told LiveScience in an interview. He said that both archaeological and ancient written records indicate that the Asiatic lion, now extinct in Turkey, was still very much around, some even being kept by the Hittites in pits.
Curiously the sculpture at Karakiz has an orange color caused by the oxidization of minerals in the stone. Summers said that he doesn't believe it had this color when it was first carved.
Digging up lions
The story of the discovery of the massive lions began in 2001, when Özen, at the time director of the Yozgat Museum, was alerted to the existence of the ancient quarry by a man from Karakiz village and an official from the Ministry of Culture. An extensive search of the area was undertaken in spring 2002 with fieldwork occurring in the following years.
Looters, however, beat the archaeologists to the catch. The Karakiz lion was found dynamited in two, likely in the mistaken belief that it contained hidden treasure. "There's this belief that monuments like this contain treasure," said Summers, explaining that the dynamiting of monuments is a problem in Turkey. "It makes the Turkish newspapers every month or so."
The second lion, found to the northeast of the village, had also been split in two. As a result of this destruction both lion sculptures, which originally were paired with another, now mainly have one lion intact.
The danger of new looting loomed over the researchers while they went about their work. In the summer of 2008 evidence of "fresh treasure hunting" was found at the ancient quarry along with damage to a drum-shaped rock that, in antiquity, was in the process of being carved.
What were they intended for?
The discovery of the massive lions, along with other pieces in the quarry, such as a large stone basin about 7 feet (2 meters) in diameter, left the archaeologists with a mystery — what were they intended for? [History's Most Overlooked Mysteries]
A search of the surrounding area revealed no evidence of a Hittite settlement dating back to the time of the statues. Also, the sheer size of the sculptures meant that the sculptors likely did not intend to move them very far.
Summers hypothesizes that, rather than being meant for a palace or a great city, the lions were being created for a monument to mark something else – water.
"I think it's highly likely that that monument was going to be associated with one of the very copious springs that are quite close," he said in the interview. "There are good parallels for associations of Hittite sculptural traditions with water sources."
Indeed one well-known monument site, known as Eflatun P?nar, holds a sacred pool that "is fed by a spring beneath the pool itself," write Yi?it Erbil and Alice Mouton in an article that was published in the most recent edition of the Journal of Near Eastern Studies. The two researchers were writing about water religions in ancient Anatolia (Turkey).
"According to the Hittite cuneiform texts, water was seen as an effective purifying element," Erbil and Mouton write, "used in the form of lustrations or even full baths during ritual performances, its cleansing power is self-evident."
To the Hittites the natural world, springs included, was a place of great religious importance, one worthy of monuments with giant lions. "These things (water sources) were sacred, just as their mountains were sacred," Summers said.
Jarus, Owen. 2012. "Ancient Life-Size Lion Statues Baffle Scientists". Live Science. Posted: July 25, 2012. Available online: http://www.livescience.com/21838-ancient-lion-statutes-turkey.html