This is a Mexican Fencepost cactus. Also called an Organ Pipe or Organo. I like that one. It is shaped like a star from the top. The spines are along the edges, they are short and give the appearance of “hand-stitching”. Dressed and ready for the ball! Work in progress. Nothing is working here. Oops, hehe.
Here’s a winner though. Saved by the sunset!