Cereus species- Muscat, Oman

Cactus For ID : Muscat : 28SEP17 : AK-25 : 8 posts by 2 authors. Attachments (5)
Very old pictures taken in Muscat.

I think does not matches with images at http://cactiguide.com/cactus/?genus=hylocereus&species=costaricensis

I was suggesting the id from the link https://davesgarden.com/guides/pf/showimage/199405/

Your plant looks like one of the Cereus. Do a Google for Cereus. 

Thanks … for the suggested id.
I believe it’s the same one in FOI as per the link…..
http://www.flowersofindia.net/catalog/slides/Sea%20Urchin%20Cactus.html

Could be Selenicereus pteranthus?
Just a guess

Acanthocereus tetragonus (L.) Hummelinck ??