Archaeologists rarely start by opening the ground. Excavation disturbs soil layers and the information inside them, and once a site is disturbed, archaeologists cannot restore it to its original condition. That is why archaeologists use non-invasive methods first and dig only when excavation can answer a clear question.
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\nA common early step is a pedestrian survey, a planned walk across an area to see what lies on the surface. Archaeologists look for artifacts such as pottery fragments or worked stone, and they note surface features that stand out from the surrounding terrain. They map and photograph what they find, and they keep notes so that later decisions rest on recorded observations.
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\nArchaeologists also look for cultural landscape clues, meaning evidence that people shaped the physical environment. Constructed features, including mounds and terraces, can show where past activity concentrated. These larger patterns help archaeologists spot places that deserve closer study and decide where to focus next…