Cupule Rock Nevada

Grimes point was on the shore of ancient ice age Lake Lahotan 10,000 years ago. The lake now evaporates faster than it accumulates. This was a marsh 2000 years ago. People have lived here and marked these rocks for thousands of years. Some of these seem to keep track of the seasons and phase of the moon by aligning rocks in indentations (cupules) to match and record celestial body positions. The black surface of the rocks are due to thousands of years of exposure to weather that have developed over the rock engraving. http://www.nvrockart.org/aan_pages/Grimes.html Source: Objaverse 1.0 / Sketchfab一万年前的冰河时期，格里姆斯角（Grimes Point）坐落于古湖拉洪坦湖（Lake Lahotan）的湖岸之上。如今该湖的蒸发量大于补给量，湖水正逐渐萎缩。两千年前，此处曾为沼泽湿地。数千年来，人类在此繁衍生息，并在这些岩石上留下了刻画印记。其中部分刻画似乎通过对齐凹坑（cupules）内的石块，以匹配并记录天体位置，借此追踪季节更迭与月相变化。岩石表面呈黑色，系数千年的风化作用所致，该风化过程与岩石上的刻画同步形成。 相关参考链接：http://www.nvrockart.org/aan_pages/Grimes.html 数据集来源：Objaverse 1.0 / Sketchfab