SAN ANTONIO -- Archaeologists looking for signs of the South and West walls of the original Alamo Complex made a big discovery Friday night.

The thing is, some of them weren't sure it was a discovery at all.

"We got very excited and we showed some of the team members and they said, I'm not quite sure what I'm looking at," said Alamo Archaeology team leader Nesta Anderson.

Eight inches beneath the surface, they saw the remnants of an adobe brick wall. While the find is significant, Anderson said they're not yet sure exactly what the wall is.

"We're not convinced that it is the west wall. All we know is that it is an adobe brick wall," said Anderson. "It could be related to another feature of the west wall. We do know there were rooms that people were living in. It may be related to those rooms rather than the compound wall."

If the bricks are from a home inside the complex and not the complex wall itself, Anderson said they should find some tell-tale signs in the near future.

"The deposits around it could tell us about what wall it is. Sometimes you'll have a bunch of trash next to a living wall of a house," said Anderson. "There's information to get, we're just not sure what kind yet."

Tourists stopped by the dig sites to take pictures and ask about the excavations. Visitors said they're excited the Alamo's history is being unearthed.

"It's exciting to see and touch something that somebody hundreds of years ago ate off of or used or brushed their hair with. To me it's pretty fascinating," said Anne Adams, a visitor from Delaware.

"It's really cool. It's a big part of Texas history and I think the people of Texas need to learn more and to discover more about the Alamo," said Kimberly Lewis. Her family travels from Abilene every year to see the Shrine of Texas Independence. "It's a big part of who we are and it builds pride in us."

The whole point of this excavation is to answer questions for the Alamo Master plan. Anderson's team will take it's time digging and chipping away, because as she puts it, they've only got one chance at this.

"Archaeology is a process you can't go back and replicate. Once you dig it, it's gone," said Anderson. "So we're being very mindful of how we approach this so we're not just digging to dig, we're digging to get answers to these questions."