Seriously, but the conditions are these:

1. The mountain must not have many houses on it or any too close by.

2. It still needs to be near a populated area, so that if it should come up missing, it would be noticable.

3. It needs to be made of a material that is relatively solid, not anything like a pile of sand stone or loose volcanic ash.

This is a serious question, believe it or not, I could really use help on this.