Why historical sites or artifacts are always found buried?

Question:I want to learn archeology as a hobby and this is the biggest question in my head. Anyone cares to explain? I's be really appreciate that. Thanks in advance!

Best Answer - Chosen by Asker: I want to learn archeology as a hobby and this is the biggest question in my head. Anyone cares to explain? I's be really appreciate that. Thanks in advance!

The older a site is, the deeper it usually is, because soil and building add height to many areas. In some cases, the conquerers in wars just build right on top of the conquered area. In Rome, there are sites in the middle of the city that are one level below the current ground level.

PRE-HISTORIC DINOSAUR BONES AND THOSE OF EARLY HUMANS AND CIVILIZATIONS! EVEN, OLD COINS IN YOUR OWN BACKYARD OR WOODS WITH A METAL DETECTOR! NATURE HAS A HABIT OF CONCEALING EVERYTHING OVER TIME! GOOD HOBBY!!