There is a reason no-one lives on the top of Sinjar mountain. It is bleak, baking hot, with little shelter and there is no food or water.
There are thousands of Yazidis on that mountain again tonight.
The brave Iraqi army helicopter crews are doing what they can to help them, but they only had two helicopters flying today.
They managed six trips between them today, but they cannot bring in enough food and water and they cannot bring out enough people on their own.
It is little wonder that all those crews and pilots speaking to us today were pleading for the international community to do more to help the persecuted on that mountaintop.
Kurdish Peshmerga fighters have emerged victorious in the battle for Mosul Dam, but the question is - what will their next move be?
An ITV News team at Mosul Dam was with victorious Kurdish Peshmerga fighters at the complex earlier today.
ITV News joined a Kurdish unit fighting Islamist militants near Irbil and found them using tanks from the 1950s and short on ammunition.