Column formations occur only in igneous rocks. Igneous rocks originate from lava (on the Earth's surface) or magma (below the Earth's surface). As the molten rock cools from a liquid to a solid form, it begins to contract. This contraction stresses the cooling rock which begins to crack. Cracks radiate out from stress points, forming hexagonal (6-sided) shapes.
MeshLab 2021.07 is out! In this version we introduce support to several file formats (*.gltf, *.glb, *.nxs, *.nxz, *.e57) and a brand new plugin for exact mesh booleans. You can download in the download section, or in the github release page.
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