The explosion of the munitions ship in Halifax was the largest known man made explosion until the first atomic bomb was dropped in 1945. One of the biggest impacts on me was to witness the landing site of part one of the ship's anchors, which landed in a wooded area five kilometers away. Here are a few sites that discuss the disaster. There is a wonderful web site where people have registered as volunteers to take photos of gravestones in cemeteries in their communities, and where family history researchers can contact those volunteers to have photos taken and sent to them. The program works on a cost recovery basis only.
Volunteers agree to do the deed for the cost of film, developing and postage.
When you go to the web site you can search for photographers in the area where the cemetery of interest is and choose from a list of volunteers. I did a search on Ontario in Canada and found a list of eighty one volunteers across the province. A terrific resource for you if you are looking for a photo of a grave marker in a cemetery far from your home. Also a wonderful outlet for you to volunteer your time to help others. The Global Gazette reaches a lot of readers each week.