"Well, we could tell them that we're here on an archeological expedition"

Edie Adams' quote suggests that she and her buddy are looking for a method to describe their presence in a particular location. By saying they are on an archeological expedition, they are implying that they are there for a legitimate purpose and not simply to cause problem. This might be a way to prevent suspicion or to access to a limited area. It could likewise be a way to acquire the trust of individuals they are speaking with. By presenting themselves as archeologists, they are revealing that they are knowledgeable and have a genuine interest in the location. This could be a way to gain access to information or resources that would otherwise be unavailable. Eventually, Edie Adams' quote suggests that they are searching for a way to discuss their presence in such a way that is both credible and advantageous.