As Eric the Red's visit to Greenland in 986.
I thought I had read that Kilamanjaro's last eruption was identifiable in a limestone strata. It hasn't erupted in recorded history you say ?
It is officially classified as a dormant volcano with no eruptions in there era of man. There is magma there. There are some steam vents but these have been there for ever. Unbiased climatologists note from the ice core samples that this level of ice has been seen on Mt Kil before...although it was 10K+ years ago.
But...on the scale of the geological record...10K years is a blink.