White Substance That Coated Giza's Great Pyramid
This page is the CodyCross answer for the clue below from Tracking Time, Group 1048, Puzzle 2 (Millennium).
Question is: White Substance That Coated Giza's Great Pyramid
and the answer is: LIMESTONE
Word Meaning:
LIMESTONE — An abundant rock of marine and freshwater sediments; primarily composed of calcite (CaCO₃); and occurring in a variety of forms, both crystalline and amorphous.
Definitions from Wiktionary.