Look up a map of Grande Comore, and you’ll see that this impressive volcano takes up almost half of the island. This imposing mountain is still an active volcano (the last eruption was in 2007), and many of the flows from previous eruptions can be seen around the island, some of them passing through villages. The crater of the volcano can be reached in a two-day hike (or in one long day if you are very fit), in a pretty steep and steady ascent going through plantations and dense forest, then through bushes and shrubs covered in ashes. At the rim of the crater, you could very well think you’re on the moon. As of 2014, the lava lake is under a layer of ashes, so the expected red glowing glare is not part of the scenery, but the smoking crater and the view coming down are well worth the effort.