are you asking about tunnels for cars or pedestrian walkways? The are a lot of walkways underground, especially on the University of MN campus (both Minneapolis and duluth). For cars, not really. the longest tunnel I can think of is on interstate 94 (in Minneapolis) under lowry avenue. It is only about 1000 ft long.
They dig tunnels underground.
The animal that burrows in dirt and creates underground tunnels is a mole.
in the underground tunnels.
The animal that burrows in the ground and creates intricate underground tunnels is the mole.
people drive in them
tunnels
Animals that digs tunnels, ants, m.oles, prairie dogs
A meercat lives underground in a tunnel. Thay also dig tunnels. A meercat lives underground in a tunnel. Thay also dig tunnels.
In The Underground tunnels
you find in the underground tunnels
in underground tunnels But i am not sure if this is right tho