Does it have heavy thorns piercing the hair? If it does it is Oreocereus trolli or another Oreocereus, If it doesn't have pronounced thorns it could be Cephalocereus senilis. There are a few Cepholocereus that it could be. The Microcanthocereus family look good also.

This is where blurry doesn't help with the IDing.

Here is a link that might be useful: Check through these pages.