Cereus species ?

 

 
https://08511630493324166816.googlegroups.com/attach/ac437b4601142d38/Cacti-DSCN1014.JPG?part=0.1&view=1&vt=ANaJVrHVoNgmT0OhtEu06VT-kSuhsMdhWdc97VPw-TEDpe2qXiB9QioJ54Lx37YhW1dbs-7QJrCuIoHdSlW0QolqIHIqaBPNs2XI_X_adi2cET9JhVaojNg
A cactus seen at the flower show in Jijamata Udyan, Mumbai in Feb,2011.
Some Cereus sps?
This looks familiar ...,
But I really cannot place it. Try looking through http://www.columnar-cacti.org/ , there are lots there to look at. Hope this helps some.