Now, the third hardest place to find interesting pictures about: Mangai
I do not know if my subpar drawing were doing anything, but they were ideas.
However there are some pretty interesting things that happen with volcanoes, it is just not easy to photograph, let alone photograph in the context of Mangai. Unfortunately none of the color scheme is going to appear in most pictures so, just imagine, or photoshop it if you have the skills.
Without further ado:
Calderas (Yellowstone super volcano)
Calderas happen when a volcano collapses on itself, forming a whole that later fills with water. Since the water can't drain you get a lake, that is heated by magma if the volcanoe is still active.
Normal hill where lava flows around leaving the vegetation alive. Maybe for a Tiro-Mangai border?
Highly viscous lava gets stuck at the opening of a volcano. The pressure makes it puff like a balloon. They can explode, expel lava like toothpaste, or collapse on themselves.
Sometimes lava solidifies on the exposed area, while the center continues to travel. This gives rise to lava tubes, where the solid lava works as an insulator keeping the lava hot for longer periods of time.
Lava filling a caldera is called a lava lake. They do not last for long, they either get drained or do something like an eruption.
This one because why not:
When lava decides to go outside through the water.
Of course you have probably see the Ice towers.
There are also some basalt formations:
(Basalt is a rock made from lava, and Igneous rock)
This in Turkey:
Basalt is also used in construction and as cobblestone. Heating it and extruding gives stone wool, a thermal insulator.
If you are curious:
The other types of rocks that form from lava are rhyolite, andesite, obsidian and pumice.
Mainly used in construction.
Nothing great, some use in construction. It is very common.
I do not think I need to say much, but being extremely brittle is what gives it the edge you want for cutting. Under electron microscopes obsidian edges still look smooth, while metal knives look jagged and irregular.
Formed from violent eruptions, they are used mainly in making concrete. Romans used it as an additive to concrete and build the aqueducts and the Pantheon with it. It is used in so much I might as well just copy the wiki page:
So for my friend in the lava farming article, hope this helps.