Mountains will crumble and temples will fall, and no man can survive its endless call. What is it?

Why this works

This riddle uses vivid imagery to convey the inevitable and all-consuming nature of time. When it states that "mountains will crumble and temples will fall," it suggests that even the mightiest structures cannot withstand the passage of time, emphasizing its power to erode and change everything. The phrase "no man can survive its endless call" reinforces the idea that time is relentless and affects every living being, highlighting its universal and inescapable presence in our lives.