In Bundelkhandi, the meaning of the word Tathi is 'Thaali or a
plate' which is round. River Mandakini assumes a circular course
at this point and thus this place is called Tathighat. One gets a
chance to meet revered and strange sages in this forest. An old
route from Chitrakoot to Atri Ashram still exists along the banks of
River Mandakini.
Valmiki Ramayan 2/117/1 to 8 and 20, Manas 3/2/1,2