Where is easier to cook an hard boiled egg. At the foot of mountain or at top mountain?

It's easier to cook a hard-boiled egg at the foot of the mountain. Here's why:

* Boiling point: Water boils at a lower temperature at higher altitudes. This is because air pressure decreases at higher altitudes.

* Cooking time: Since the boiling point is lower, it will take longer to cook an egg to hard-boiled consistency at the top of the mountain.

So, even though the temperature might feel colder at the top, the water won't be as hot, making it more challenging to cook a hard-boiled egg.