This hammer is great for breaking rocks!
Prospector's Hammer: The hammerhead breaks and trims small rocks as well as light chisel driving, and the sharp pick end lightly pries and breaks loose or weathered rock.
Ever heard of lava lamps?
Lava is molten rock generated by geothermal energy and expelled through fractures in planetary crust or in an eruption , usually at temperature from 700 to 1200 Celsius
Geodes are prominent at old volcano sites.
Volcanic ash beds, or regions containing limestone, are common geode locations.
The mouth of a volcano once inactive
It called a caldera: This is the open concave area from a previously erupted volcano. Many will develop a natural lake.
Snowfake Obsidian is formed when...
The felsic lava rapidly cools down with very minimum crystal growth. It's basically a volcanic glass that formed as an igneous rock. Obsidian's high silica content makes the lava it forms from highly viscous, or thick.
Gases and steam from a volcano:
The mixture of gases released by volcanoes varies but, consists mainly of: water vapour (steam) - about 78% carbon dioxide - about 12% Sulphur dioxide - about 7% other gases - about 3%.
Obsidian
(/ˌɒbˈsɪdiən/; /əb-/) is a naturally occurring volcanic glass formed when lava extruded from a volcano cools rapidly with minimal crystal growth. It is an igneous rock. Obsidian is produced from felsic lava, rich in the lighter elements such as silicon, oxygen, aluminum, sodium, and potassium. It is commonly found within the margins of rhyolitic lava flows known as obsidian flows. These flows have a high content of silica, giving them a high viscosity. The high viscosity inhibits diffusion of atoms through the lava, which inhibits the first step (nucleation) in the formation of mineral crystals. Together with rapid cooling, this results in a natural glass forming from the lava. It is hard, brittle, and amorphous; it can fractures wielding sharp edges. It has been used in the past as cutting and piercing tools, and it has been used experimentally as surgical scalpel blades.
Lava flow area
Here you can see where the lava once was flowing down the volcano where you would have a pretty good chance of finding obsidian and other lava rocks