The latest Carnival of Space is the "Tunguska Edition," marking the hundredth anniversary of the Tunguska Event on June 30, 1908 (which I wrote about on my birthday, which was not a hundredth anniversary). This week's host is Mang's Bat Page. There are a few posts on Tunguska (Astroprof provides an excellent overview) but a lot more on other spacey subjects. Check it out.
The screen capture here is from Orbiter, with only "impact event" surface features selected. Tunguska is near the center of the view, and you can see there are quite a few others.