I have a friend who will clim mount Kilimanjaro, a volcano in Tanzania
Oh wow! That would be quite the feat. I always admire people who do that.
Yes, It is the highest mountain in Africa
That's impressive. How tall is it?
The summit has been measured in 1999 and 2014, but I don't know the precise value. 
I bet it's huge. I wonder if a lot of people have climbed to it's peak.
It is a quite popular climb, while tough, Kilimanjaro is not as difficult as the Everest or K2. 
A lot of people have died on Everest, which is so sad. I can't imagine how hard that climb would be.
Those climbs are really difficult, for K2 for 300 successful attempt, there was 77 fatalities
That's horrible! I had no idea the odds were so bad.
K2 is so difficult that is earned the title of "Savage Mountain"