Researchers discovered Africa's largest-ever collection of fossilized human footprints, left in volcanic mud about 10,000 years ago.

研究人员发现了非洲有史以来最大的人类脚印化石群，这些脚印在大约1万年前留在火山泥中。

Authorities expanded the evacuation order as clouds of thick smoke and ash spewed from Mount Agung, and volcanic mud flowed down the slopes.

阿贡火山浓烟滚滚，岩浆喷发，官方扩大疏散范围，火山泥从山坡上滚落。

The fossil—dated to about 125m years ago, during the Cretaceous period—was formed when a flow of boiling volcanic mud engulfed two animals seemingly locked in mortal combat.

这块化石可追溯到大约12500万年前的白垩纪时期，当时沸腾的火山泥流吞没了两只似乎陷入殊死搏斗的动物。

(Older land animals have been spotted indirectly,through preserved tracks .) From Tanzania: Researchers discovered Africa's largest-ever collection of fossilized human footprints,left in volcanic mud about 10,000 years ago.

（通过保存下来的足迹间接发现了年长的陆生动物。） 来自坦桑尼亚：研究人员发现了非洲有史以来最大的人类足迹化石群， 大约 10, 000 年前留在火山泥中。