age

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Respect for Hadean eon

The Hadean Era is a geological period from the early days of the Earth's birth to 4 billion years ago. There are only a few traces of it, and they are all almost the oldest traces. The oldest rocks, the oldest crust, the oldest minerals. In homage to the Hadean Era, which is a long time ago.
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Respect for plant succession

The transition of plants from bare ground to the formation of a forest is called vegetation succession. Over a long period of time, mosses and lichens create a thin soil, annual and perennial plants create a thick soil, and the number of sun-loving trees and shade-loving trees increases, resulting in a stable forest.
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Respect for the years

This is a tribute to the hundreds of millions of years of the Earth's ceaseless activity and activity, from rocks weathering into sand, rain sinking into the ground and becoming mineral-containing water, organic matter metamorphosing underground into fossil fuels, and minerals forming large crystals underground.