Why don't you find lumps of iron underground?

Lumps of iron are typically not found underground because iron usually exists in nature as part of ores, which are compounds containing iron combined with other elements, such as oxygen or sulfur. These ores need to be extracted and processed to obtain pure iron. Additionally, geological processes often break down and disperse metals, making them less likely to be found as large, solid lumps. Instead, iron is usually found in smaller particles or as part of mineral formations.