These are known as mole runs and are a clear sign that you have moles on your property. Mole runs appear as raised areas of soil in places where the animal has dug out a shallow tunnel. These can often collapse in on themselves, causing even more damage to your property and creating dangerous holes.

When moles dig, they also create molehills. Molehills are piles of soil excavated by the animals as they clear out tunnels underground. They will periodically turn around and push excavated dirt out of their tunnel entrances. If the tunnel network is quite large, this eventually creates a large pile at the entrance to the tunnel.

Molehills are usually small, no larger than 2 feet in width, and less than a foot high, but they can still do serious damage. One species, the European mole, is known to create the largest molehills on Earth. Some estimates say that this animal can create molehills containing more than 1,500 pounds of dirt in a single pile. Molehills can easily kill lawns and suffocate budding flowers and crops. They also are often filled with discarded rocks that can damage landscaping and farming equipment.