The Egyptian Book of the dead by P. Le Page Renouf and Edouard Naville

23. _The tunnels_, ⁂⁂⁂, ⁂⁂⁂, Teta, 291;

⁂⁂⁂⁂⁂⁂⁂, Horhotep, 213. See my note _Proc. Soc. Bibl. Arch._, 1873, p. 385. The Coptic ⲁⲕⲟⲣⲓ, which is generally supposed to be a serpent, is more probably an _earth-worm_, like ⁂⁂. The Pyramid Texts have another word which I understand of the tunnels through which the Sun, Moon, and Stars pass from West to East, ⁂⁂⁂, as opposed to ⁂⁂⁂, the paths of the upper world. Anubis is called ⁂⁂⁂⁂ (Pepi I, 80), and these passages are ⁂⁂⁂⁂⁂⁂⁂⁂⁂⁂ (_ib._, 73), “between the two divine forms” (a lion at each end). _Cf._ Teta, 319, where it is said of the Stars ⁂⁂⁂⁂⁂⁂⁂⁂⁂⁂⁂⁂⁂⁂⁂⁂⁂⁂⁂, that at their triumphant course through the tunnels the bones of the Akeru gods quake.