Robuta

https://www.springerprofessional.de/characteristics-of-micro-structure-of-warm-and-ice-rich-frozen-s/19371326
In permafrost regions, the warm and ice-rich frozen soil (WIRFS) underlying the embankment has a low strength and large compressibility, which
characteristicsmicrostructurewarmice
https://www.sciencefriday.com/segments/the-surprising-life-inside-frozen-soil/
Microbes and root systems create a cozy ecosystem amid the icy earth.
life insidefrozen soilsurprising
https://www.sciencedaily.com/releases/2006/09/060915203610.htm
Scientists have long known that uranium salts under ultraviolet light will glow an eerie greenish-yellow. The resolution of the spectral fingerprint becomes...
cold shotfrozen soilblastingsampleultraviolet