Cemeteries and Cemetery Symbols

This is one of the symbols I imaged recently at Ottawa's Beechwood cemetery. I'd had it in the back of my mind to explore the meaning of this and other cemetery iconography, then came across this site worth a look. Although the site is US-based, and the examples are from Colorado, many of the organizations mentioned, and the symbols, are international.

There is a Visual Glossary of Religious Symbols at an about.com site. I'm always a bit leery in mentioning about.com sites despite good content. They used to have aggressive behaviour, and I'm not sure my experience isn't better now only owing to better blocking.