Erta Ale is something else entirely. I seriously doubt there’s a more primeval, raw permanent example of the Earth’s volcanic forces than this utterly awe-inspiring place, anywhere in the world. Erta Ale is one of only a couple of permanent lava lakes in the world, and probably the only accessible one at present (the other, at Virunga National Park in eastern Congo (formerly Zaire) is affected by civil war and out-of-bounds to tourists at present, while tourists can’t walk up to the edge of the two on Kilauea volcano in Hawaii for a look inside. although of course the point where the lava flows into the ocean is a famous tourist draw).
The fact that Erta Ale lies in an extremely remote and inhospitable place (statistically the hottest place on earth) makes visiting it an even more unforgettable experience. There are no handrails, no marked footpaths to be kept to, and no park rangers blowing whistles if anyone gets too close to the edge. You’re free to stand right on the lip of the crater and goggle at the ovoid lake of molten lava just 20 meters below, its congealing surface constantly cracking as the liquid rock beneath forces its way through, while sprays of molten rock burst out of a cave on the far side of the crater like a geyser.