Mexican Fence post question?

[friedrich03]

Hello, I'm wondering if there is something wrong with this cactus? It's the spot/discoloration in middle. Thanks for your replies.

[greenknight]

If it's dry, not soft, and it's not spreading, it'd nothing to worry about. It's rare to see a large cactus that doesn't have something similar to that on it somewhere. Take a look at the specimens here: http://davesgarden.com/guides/pf/go/62859/" onclick="window.open(this.href);return false;