If you find a series of linear shapes in the same alignment as known archaeological features, and they match excavated examples, you still need to excavate to confirm, but you can be fairly sure that the imagery is accurate.
Scorpions like holes. We had to put our arms in the holes to dig out the smelting residues. We always performed critter checks before an excavation, but one morning, I put an arm in and felt a sharp pierce. When I brought my hand out, it was red and already swelling.
I give my grandfather, Dr Harold Young, a forestry Professor at the University of Maine, full credit for my career path. He pioneered the use of aerial photography in forestry in the 1950s, and we think he worked as a spy for the CIA during the Cold War, mapping Russian installations.
There are so many previously unknown sites and structures all over the world. And I think most importantly what satellites help to show us is we've actually only found a fraction of a percent of ancient settlements and sites all over the world.
I can't tell you the number of times I've been walking over an archaeological site. And you can't see anything on the ground, and pull back hundreds of miles in space, and all of a sudden you can see streets and roads and houses and even pyramids.
Think about what would happen if Indiana Jones and Google Earth had a love child. I use high-resolution and NASA satellites and look for subtle differences on the surface of the earth that locate buried ancient pyramids and towns and ancient tombs, which we then go and excavate.