225-million-year-old petrified opal tree trunk located in Arizona

Arizona is one of those American states we tend to associate with dry, high winds and desert, the kind of landscape that shrivels skin and makes standing…

Kummakivi is a 5,00000 kg rock in Finland that has been balancing on top of another rock for 11,000 years

This strange sight perplexed visitors since its discovery, and spawned stories of giants having balanced the rock in its position, but geologists have a more realistic explanation: glaciers….

This is an old cedar tree about 800 years old

This is an old cedar tree about 800 years old that stands at the east foot of Mt. Daimanji, Oki Islands, Japan. This tree has a height…