Here are some pics of a tortoise that I received in 2010 that had slight pyramiding at that time. I tried the hot and humid enclosure setup with overhead heat, It wasn't working for me, I am not sure why, but as time went on the pyramiding seemed to be getting worse. I have been working to try to smooth the shell a little with a more gentle heat and have made some progress,It will always have some signs of my mistakes but will be as healthy as I can make it. The first pic was taken in Sept 2010, the next was in July 2011, and the last ones were taken today, I added the last pic hoping for some thoughts on its sex. (9 inches and heavy). I live near Wash DC so there are at least 5 months of the year were it gets outside time only when weather permits.