Over the next forty years, numerous reports from mountain men and trappers told of boiling mud, steaming rivers and petrified trees, yet most of these reports were believed at the time to be myth.[15]
在接下来四十多年里，从山人和毛皮猎人大量报道中讲述了这些沸腾的泥浆，热气腾腾的河流以及石化了的树木，但是大部分这些报道当时都被认为是神话。
It is an organic substance and is a petrified rosin of ancient trees related to rosin.
一种有机物质。它是一种含一些有关松脂的古代树木的石化松脂。
The mummified trees are different from petrified wood, a kind of fossil created when wood is replaced with minerals over thousands of years.
这些木乃伊树有别于石化的树。石化树是一种化石，因其木质在千百年中转化成矿物质而形成。
The mummified trees are different from petrified wood, a kind of fossil created when wood is replaced with minerals over thousands of years.
这些木乃伊树有别于石化的树。石化树是一种化石，因其木质在千百年中转化成矿物质而形成。
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