The oval surrounding their name was meant to protect them from evil spirits in life and after death. The cartouche has become a symbol representing good luck and protection from evil. Egyptians believed that one who had their name recorded somewhere would not disappear after death. A cartouche attached to a coffin satisfied this requirement.
A single mole can construct 200 mounds over the course of a winter. (Drawing by Jenifer Rees.) Moles construct two kinds of tunnels: surface tunnels and deep tunnels, or runways. Surface tunnels are located 1 to 4 inches below the surface.
According to a 2005 review by Paul Cary, while detection times in excess of 30 days do occur for some, they are largely an exception. For example, a 1989 study of chronic users showed a maximum detection window of 25 days at a sensitivity of 20 ng/mL.