Abstract: A marking device for marking the location of underground utility lines including an indicating member having at least one substantially planar surface and a positioning member rigidly secured to the indicating member that includes a stake member oriented perpendicularly with respect to the substantially planar surface having a plurality of stabilizing members extending therefrom and oriented at an angle of between thirty and sixty (30.degree., 60.degree.) degrees thereto. The stabilizing members are constructed from a material having sufficient resilience to allow each stabilizing member to flex while the stake member is inserted into the earth. The indicating member includes indicia indicating at east one type of utility and indicia indicating a direction of travel with respect to the indicating member.