Holt is home to an ancient glacial esker. This esker, the longest in Michigan at roughly , can be traced from south Lansing through Holt to just beyond Mason.Felton, Jim, Inge Kyler, Russell Jessop, Nancy Meese, Leon North, Guy Sweet, Gregory N. Veltema, Harvey Wood. (1987). A Michigan Sesquicentennial History of Delhi Township (Holt, Michigan: The Michigan Sesquicentennial Agency for Delhi Township, 1987), 1-2.
Holt is home to an ancient glacial esker This esker the longest in Michigan at roughly  can be traced from south Lansing through Holt to just beyond MasonFelton Jim Inge Kyler Russell Jessop Nancy Meese Leon North Guy Sweet Gregory N Veltema Harvey Wood (1987) A Michigan Sesquicentennial History of Delhi Township (Holt Michigan The Michigan Sesquicentennial Agency for Delhi Township 1987) 1-2