fjords
Most parts of the Netherlands are below sea level / below the water level of the rivers that flow through the country. If there were no dams and dykes, those lands would be flooded.
like New Orleans it is below sea level and gets flooded many times a year.
Diamonds can be found below level 16.
Diamonds are found below level 16 of the world.
Gold is found at layers 32 and below. This is the same level that emeralds and lapis lazuli are found.
Carved deep U-shaped valleys distinguish fjord glaciers. The valleys also extend below sea level and are flooded by the ocean.
They were always known to the locals, as very deep springs, but exploration of them as flooded caves had to wait for the development of cave-diving to a suitable level, so perhaps from the 1970s.
shale
If it was zero it would be flooded, 23 ft above sea level is the answer......
Better have good SCUBA gear... That or you've found ATLANTIS
You cannot get a Suicune level 40. Suicune cannot make eggs, and thus, he cannot be below level 40. No legendaries can be at a level lower than they are found at.
Granite