Limestone is a common type of sedimentary rock which I find uncommonly interesting! It's mostly calcium carbonate, which is also what eggshells π₯, seashells π, and pearls π¦ͺ are made out of.
In places where it rains a lot, limestone erodes easily, which results in simply gorgeous landscapes such as:
HαΊ‘ Long Bay in Vietnam
Tsingy de Bemaraha National Park in Madagascar
The Li River in China
Additionally, the world's longest (Mammoth) and deepest (~~Veryovkina~~ Krubera is once again the world's deepest cave, thank you to SockOlm for pointing that out) cave systems are both found in limestone formations
Mammoth Cave in the United States
Veryovkina Cave in Georgia/Abkhazia/Russia (disputed territory)
image sources
Thumbnail https://commons.m.wikimedia.org/wiki/File:ElTorcal0408.jpg#mw-jump-to-license
HαΊ‘ Long Bay https://commons.m.wikimedia.org/wiki/File:Halong_Bay_in_Vietnam.jpg#mw-jump-to-license
Tsingy de Bemaraha National Park https://commons.m.wikimedia.org/wiki/File:Tsingy_de_Bemaraha.jpg#mw-jump-to-license
Li River https://commons.m.wikimedia.org/wiki/File:Li-Flussfahrt-160-Huegel-2012-gje.jpg#mw-jump-to-license
Mammoth Cave https://commons.m.wikimedia.org/wiki/File:Mammoth_Cave_Rotunda_(USGS_Lwt02830).jpg#mw-jump-to-license
.jpg#mw-jump-to-license){kind=link}
Veryovkina Cave https://commons.m.wikimedia.org/wiki/File:Veryovkina_cave._Babatunda_pit.jpg#mw-jump-to-license
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idk about the first two points, but I know the third is common now. They give a fake tracking number because capitalism efficiency. I guess by giving you a number that is already shipping to the same city they can get the ball rolling on getting paid earlier or something. They still ship the product and just expect the customer to not care or notice.
yeah it's a dropshipper thing, it's easier to just buy access to a tracking number from some data broker that happened to ship about the same time to the same city or zip code than it is to 1) get amazon or ebay or whoever to accept a new type of tracking number, or even 2) actually use a shipping provider that has tracking, and 3) if it doesn't come on time or doesn't show up at all it makes it hard as fuck to dispute since "the tracking shows it was delivered on time"
pretty strange, but I guess it makes sense