Archaeologists think they have found a cave where John the Baptist baptized many of his followers, basing their theory on thousands of shards from ritual jugs, a stone used for foot cleansing and wall carvings telling the story of the biblical preacher.

Only a few artifacts linked to New Testament figures have been found in the Holy Land, and the cave is potentially a major discovery in biblical archaeology.

"John the Baptist, who was just a figure from the Gospels, now comes to life," British archaeologist Shimon Gibson said during a recent tour of the cave. But some scholars said Gibson's finds aren't enough to support his theory, and one colleague said that short of an inscription with John's name in the cave, there could never be conclusive proof of his presence there.

John, a distant relative of Jesus, was a fiery preacher with a message of repentance and a considerable following. Tradition says he was born in the village of Ein Kerem, which today is part of modern Jerusalem.

Just 2.5 miles away, on the land of Kibbutz Tzuba, a communal farm, the cave lies hidden in a limestone hill -- 24 yards long, four yards deep and four yards wide. It was carved by the Israelites in the Iron Age, sometime between 800 B.C. and 500 B.C., and apparently was used as a ritual immersion pool, the scientists said. Over the centuries, the cave filled with mud and sediment, leaving only a tiny opening that was hidden by trees and bushes.

Yet in recent years, it had occasional visitors -- including Reuven Kalifon, an immigrant from Cleveland who teaches Hebrew at the kibbutz and began taking his students spelunking there. They would crawl through the narrow slit at the mouth of the cave, all the way to the back wall, though they saw nothing but dirt and walls.

In December 1999, Kalifon asked Gibson, a friend, to take a closer look.

Gibson, who has excavated in the Holy Land for more than 30 years, moved a few boulders near the walls and laid bare a crude carving of a head. Excited, he organized a full-fledged excavation.

Over the next five years, Gibson and his team, including volunteers from the University of North Carolina at Charlotte, cleared out layers of soil, picking up about 250,000 shards from small jugs apparently used in purification rituals.

The explorers uncovered 28 steps leading to the bottom of the cave. On the right, a niche is carved into the wall -- typical of those used in Jewish ritual baths for discarding the clothes before immersion.

Near the end of the stairs, the team found an oval stone with a foot-shaped indentation -- about a shoe size 11. Just above, a soap-dish-like niche apparently held ritual oil that would flow through a small channel onto the believer's right foot.

Crude images were carved on the walls, near the ceiling, and Gibson said they tell the story of John's life.

One is the figure of the man Gibson spotted on his first visit to the cave. The man appears to have an unruly head of hair and wears a tunic with dots, apparently meant to suggest an animal hide. He grasps a staff and holds up his other hand in a gesture of proclamation.

James Tabor, a Bible scholar from the University of North Carolina, said there is little doubt this is John himself. The Gospels say that John was a member of the Nazarites, a sect whose followers didn't cut their hair, and that he adopted the dress of the ancient prophets, including a garment woven of camel's hair.

On the opposite wall is a carving of a face that could be meant to symbolize John's severed head. The preacher's head was cut off by Herod Antipas after he criticized the ruler over an illicit affair.

The images are from the Byzantine era, apparently carved by monks who associated the site with John, following local folklore, Gibson and Tabor said.

"Unfortunately, we didn't find any inscriptions" that would conclusively link the cave to John, Tabor said.

Still, Gibson, who heads the Jerusalem Archaeological Field Unit, a private research group, argues that the finds and the proximity of John's home town are strong evidence the cave was used by the preacher.

"All these elements are coming together and fill in the picture of the life and times of John the Baptist," said Gibson, who has written a book about the dig, "The Cave of John the Baptist," which is being published this week.

Stephen Pfann, a Bible scholar and president of the University of the Holy Land in Jerusalem, said that Gibson has provided a plausible explanation for the unusual finds but that further study is needed. "It is inviting more scholars to come in and give alternative explanations, if they can," he said.

Gibson said he has left about a third of the cave untouched for other archaeologists to explore.

Members of an archaeological team enter the cave where the excavation team believes John the Baptist anointed disciples.The entrance of the cave on Kibbutz Tzuba near Jerusalem was hidden for centuries, and mud and debris had nearly filled in the cave before the excavation began.Israeli archaeological site manager Rafi Lewis shows what a team of archaeologists believe to be a Byzantine-era carving of John the Baptist and a stone that is thought to have been used for ceremonial foot washing.