Teaser Tuesday - The Seventh Scroll

Teaser Tuesdays is a weekly bookish meme, hosted by MizB of Should Be Reading. Anyone can play along! Just:
* Grab your current read
* Open to a random page
* Share two (2) “teaser” sentences from somewhere on that page
* BE CAREFUL NOT TO INCLUDE SPOILERS! (make sure that what you share doesn’t give too much away! You don’t want to ruin the book for others!)
* Share the title and author, too, so that other Teaser Tuesday participants can add the book to their To Be Read (TBR) Lists if they like your teasers!

----------

Royan and her new partner Nicholas have traveled from England to Ethiopia in search of a lost Pharaoh's tomb written about in an ancient scroll. They have searched the Nile river for clues to the secret location, and have found carvings in a cliff wall that may lead them closer to their goal.

The Tease:

 "Swimming on downwards, he found another niche, then another.  Four rows of niches, twenty-four feet below the surface.  His ears were popping and squeaking as the pressure squeezed the air out of his Eustachian tubes.  His eyes were wide open, but the waters below him were dark and turbid."

 -The Seventh Scroll, by Wilbur Smith

What's your Tease?