Adoration of the rising Sun between two Sycamore trees, white bull-calf between the trees. In Egyptian myths from Heliopolis (Greek: "City of the Sun"), biblical ON, the Sun was said to rise each day between two Scyamore trees. Other myths portrayed the Sun as being born each morning as a BULL-CALF, from his mother, the "Heavenly Cow," who personified the Sky, called either Nut or in other myths, HATHOR. In still other myths, a Cow was impregnated by a beam of light from the Sun, and a white bull-calf was born which became the sacred Apis Bull. I suspect that the rising Sun between the trees and the white Bull-Calf are allusions to the Sun as the Calf born each day of Hathor/Nut.
"The sycamore itself was a tree of particular mythical significance. According to Chapter 109 of the Book of the Dead, twin 'Sycamores of Turquoise' were believed to stand at the eastern gate of heaven from which the sun god Re emerged each day, and these same two trees sometimes appear in New Kingdom tomb paintings with a young bull calf emerging between them as a symbol of the sun. While the cosmic tree could thus take on a male aspect as a form of the solar god Re-Herakhty, the Sycamore was especially regarded as a manifestation of the goddesses Nut, Isis and Hathor- who was given the epithet "Lady of the Sycamore." (p.117, "Tree." Richard H. Wilkinson. Reading Egyptian Art, A Hieroglyphic Guide to Ancient Egyptian Painting and Sculpture. London. Thames & Hudson. 1992)
Hathor/Nut was at times portrayed in myths not only as the sky giving birth to the Sun, but also in tomb paintings as a Sycamore tree, providing food and drink in the Afterworld to the Righteous Dead. So the rising Sun and Bull-Calf associated with the Sycamore trees in this mural may be alluding to Hathor giving birth to the rising sun and bull-calf. Hathor was also the "Goddess of Turquoise" and honored with shrines at the Copper Mines in the Sinai (the mining camps of Serabit el Khadim and Timna in the Arabah).
(cf. p.28, Tomb of Arinefer, Thebes, 20th Dynasty. Robert Boulanger. Egyptian and Near Eastern Painting. New York. Funk & Wagnalls. 1965 [Note: Wilkinson dates this mural to the 19th Dynasty, cf. p.116, Reading Egyptian Art)