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The dramatic setting in the andes features sheer cliffs and lush valleys .

安第斯山脉的结构特点是陡峭的悬崖和苍翠繁茂的山谷。

If they both fell off cliffs , the technology died with them .

假如他们全跌下了悬崖，这种技术也就失传了。

The cliffs are sheer , blasted smooth and bristling with broken glass .

悬崖陡峭，被炸得光滑，竖立着碎玻璃。

So the cliffs are considerably older than recorded history .

因此可以说此处峭壁要比有记录的历史古老得多。

The cliffs towered above them .

悬崖峭壁高耸于他们上方。