Preparing for the cave of crystals
The Cave of crystals is an amazing place
One visitor described it as "like a child's dream"
The huge crystals are possible because of the hot,wet conditions in the cave
Those same conditions also make it impossible for humans to stay in the cave for very long
The temperature of the cave of crystals is 45°C
That is almost as hot as the hottest days in the Sahara Desert!
You can't just walk in
You need to prepare carefully and wear special clothes
First,you have to put on a vest,which has more than 12 ice packs across the front and back
After this comes another vest
This keeps the heat away from the ice
Over this,you have to wear a bright orange caving suit
You also need a mask that blows ice-cooled air
Then there is the helmet with a headlamp
Finally,you need to put on gloves and boots
Even with all this protection,being inside the cave is very tiring
Most people don't go inside for more then 20 minutes
Even a few minutes can be enough
Visitors to the cave think its beauty is worth the difficulty
In the words of another explorer,it's as though you are"standing inside a star
How the crystal Cave was made
Who
Many tourists go into
No one lives in
We can infer that
The difficulty
Discovering
Which of the following do explorers put on last
A vest
A caving suit