Raising a pyramid The pyramids which poke out through the forest canopy have long caused scholars to wonder how it was possible that the Mayans, without any metal tools, were able to carve so many huge stone blocks.
一座座高出樹海的方形金字塔，遠遠地矗立在森林裡，曾令學者們大費猜疑：馬雅人是如何在沒有任何金屬工具下，切割這麼多的巨大石磚？