Dating from about 7, 370 BC, these polychrome rock paintings cover recesses in the near-vertical walls with imprints of human hands, drawings of guanacos and, from a later period, abstract designs.

从大约公元前7370年，这些彩色岩石画覆盖在近乎垂直的墙壁凹处，包括人类的手的印痕，栗色羊驼画和后期的抽象设计。

youdao

I tried to get a sample for O.S.L. dating here, but when bits of the deposit started falling down around me, I decided that hammering a metal pipe into this rock pile might not be such a good idea.

我尝试就在这儿拿一些光释光的样本，但是，当一些小的沉积开始在我周围坠落，我决定把一个金属馆子锤进岩石里当桩也许不是一个好点子。

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That fall into the cave happened 1.977 million years ago, according to dating based on the rate of decay of uranium in the rock layer that holds the fossils.

根据保存这些化石的岩石层里铀衰变率的基础上所确定的年代，那次掉入洞穴事件发生在197.7万年前。

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The fossils were found in northeast China earlier this year, embedded in rock dating back 160 million years, and have been called "Darwinopterus" after the renowned naturalist Charles Darwin.

CNN: Pterodactyl fossil fills gaps in evolutionary tale

At the foot of the red rock, there are remains dating back thousands of years: a Romano-Celtic temple, Bronze Age walls and structures built as long ago as the Neolithic period.

BBC: The Channel Islands�� surviving lore

With its rock-solid balance sheet, driven by accelerating revenues in its search and online dating businesses, IAC can afford to absorb on its own the losses that made the Harmans flinch.

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