This is a great point.  Borobrudur was a massive Buddhist temple from the 9th century built in Indonesia.  It was &quot;rediscovered&quot; in 1814.  The temple was 115 ft high, but after the surrounding vegetation overgrew it, it just looked like a hill.[1]<p>[1]<a href="https:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;Borobudur" rel="nofollow">https:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;Borobudur</a>