Weird Places Mexico's Giant Crystal Cave

The Giant Crystal Cave in Mexico was discovered in 2000 when miners pumped water out of a cave, revealing massive selenite crystals. The cave's extreme conditions, with temperatures around 58°C and nearly 100% humidity, make it inhospitable and challenging for scientific research. The crystals formed over half a million years due to the slow transformation of anhydrite to gypsum under stable temperatures. Other caves in the area have smaller crystals due to faster cooling. The cave's unique environment is ideal for crystal growth, and the crystals will continue to grow if the cave is reflooded.

What was the initial purpose of the mining company when they started pumping water out of the cave in Mexico?

• To find giant crystals

• To discover new forms of life

• To mine lead, zinc, or silver

• To create a tourist attraction

Why is the Giant Crystal Cave considered inhospitable for humans?

• The cave is prone to frequent earthquakes

• It is located deep underwater

• The temperature and humidity are extremely high

• It is filled with toxic gases

What is the key factor that allows anhydrite to transform into gypsum in the Giant Crystal Cave?

• Abundance of oxygen

• Temperature at or below 58 degrees Celsius

• High pressure

• Presence of sunlight

How did the conditions in the Giant Crystal Cave differ from those in the Cave of Swords?

• The Cave of Swords had larger crystals

• The Giant Crystal Cave cooled more slowly

• The Cave of Swords had more water

• The Giant Crystal Cave had a higher temperature

What will happen to the crystals in the Giant Crystal Cave when the mine eventually closes?

• They will dissolve completely

• They will start growing again

• They will become smaller

• They will stop growing