Do this first before your sweeping.

This article gives you a pre-hunt screen for terrain, land-use history, surface change, and access so you can reject weak sites before they consume a day.
A pre-hunt screen cannot guarantee better targets, but it can stop an attractive-looking site from being chosen on appearance alone. Terrain features are leads: use them to decide where more research and a short test sweep may be worthwhile.
Read the Terrain as a Clue, Not a Guarantee
Low points, level ground, springs, shade lines, and natural clearings may suggest where people could have moved or paused. That terrain can be worth a closer look, but only as a starting point for research, not evidence of targets. Treat a promising contour as a reason to check records next, not a reason to assume a find.
Land-Use History Narrows the Guesswork
Before you commit a day to a site, ask what the land was actually used for. Old maps, local records, and long-time residents may point toward former gathering spots, agricultural land, or travel routes. A documented use pattern gives you more context than a site that merely "looks old," but it still does not prove that metal was lost or remains there.
Surface Change Signals Disturbance, Not Discovery
Erosion, plowing, grading, and construction all move soil around, and areas that show visible surface change can be worth checking because disturbed ground sometimes brings older material closer to the surface. But disturbance can also scatter or bury material deeper, so this is a factor to weigh alongside history and access — never a standalone green light. Read it as one more clue in the same pre-hunt file, not a shortcut past the rest of the checklist.
Access Rules Out Sites Before You Waste a Trip
The most historically interesting spot is off the list if you cannot legally and practically enter it. Check ownership, permission requirements, and posted restrictions before travel. This can rule out a site before driving and equipment setup consume time.
No single clue — terrain, history, surface change, or access — is enough on its own. When several clues line up, a site may deserve more research or a short test. When access fails or the history does not support the visual clue, move it down the list.
TL;DR: Screen before you swing. Terrain is a lead, not proof. Land-use history and surface change add context, while access decides whether a visit is possible. Use all four to rank sites; none predicts a target.
The best hunts often start the night before, at a table with a map and a search engine, not at the trunk of your car. Build the habit of screening a site on paper first, and the ground you do end up walking will already have earned it.
The screen costs little; let a short test sweep answer the rest.
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