YA Fantasy where boy enters an Egyptian Pyramid and then he travels back into ancient Egypt. Read around 1975.

[Ryan]

I read this book around 1975 or so

[Rainbowheart]

Christophe in Egypt and Cat in the Mirror have time travel to ancient Egypt, but the MCs aren't boys.

Is the boy in the story a teenager or a younger child?

[Ryan]

I believe he was a teenager. I somehow remember he was having some problems, maybe with his parent and then wandered off at the pyramid and found some sort of entrance.

[Rainbowheart]

The Mask of Akhnaten?

[Ryan]

That could be it. Thank you so much for finding that ... I'll try to find a copy to read.
But I somehow remember him going back in time to ancient Egypt and then reluctantly coming back to present time

[Kris]

Ryan, did you rule out Cat in the Mirror (1975) by Mary Stolz?

"An unhappy teenage girl, unable to cope with problems at home and at school, suffers an accidental blow on the head and is transported 3000 years back in time to another existence in ancient Egypt."

Some Goodreads reviewers mention the girl fights with her mother and "... one day a new boy comes to school. A boy from Egypt named Seti. And that's when the adventure begins. Because, one day she's in the NYMoA and falls, then suddenly she's in ancient Egypt, a girl of that time named Iran."

[Ryan]

I initially did rule that one out but I'll take another look at it.
Thanks for the suggetion

[Andrea]

It could be Imhotep by Jerry Dubbs.

[Andrea]

Possibly the sunbird by Wilbur Smith

[Ryan]

The description sounded exactly like the book I'm looking for, except that Imhotep was published in 2010 and I read this book in 1970s

[Rainbowheart]

The other suggestion of The Sunbird was pubbed in '72, but it doesn't look like YA.