I have never already been found many many metres under the earth dug, however, something. Pretty rare to find in the deep caves where Miru resists. Thanks for the question, Kartofl! Iron is found in the lower caves, below the ones just below the surface. Specifically, try looking around caves where there are a lot of stalactites.
YES. However, you will need to cook any dead lobster within 8 hours of discovering a lobster died. Remove the rubber bands from the claws of the dead (or suspected dead) lobster or cook it in a separate pot to distinguish it from the live lobsters.
Lobster should be cooked live and eaten right away as the meat can go bad very quickly. If you need to keep previously frozen lobster for a short period, steam it as soon as possible after thawing and just reheat in the oven when ready to eat. It should then be eaten within a day or two at most. Enjoy!