As a detective solving the mystery of the crossword clue ‘Climbing Kilimanjaro, e.g.‘, my thought process immediately went to the different types of activities that could fit into this category. Considering that Kilimanjaro is a well-known mountain, my first insight led me to believe that the answer could be related to some form of outdoor activity. After examining the number of letters in the answer, I realized that a shorter term would be more fitting. At this point, I brainstormed a few possible words, but one stood out to me above the rest: TREK. A ‘trek’ is defined as a long, arduous journey, which is a fitting description for climbing a mountain such as Kilimanjaro. Based on this insight, I felt confident in submitting ‘TREK’ as my final answer to the crossword clue, and was rewarded with the satisfaction of solving the mystery.