Yes, Ljósufjöll is worth adding when you want quiet volcanic texture and have flexible route time. It is weaker as a rushed extra on a first-trip checklist.
Ljósufjöll is not the kind of Iceland stop that announces itself with a single platform, queue, or obvious postcard angle. It is a light-colored volcanic mountain range and central volcano in West Iceland, with craters, lava fields, and pale rhyolite slopes that make the landscape feel different from the coastal side of Snæfellsnes.
Add Ljósufjöll for self-drive travelers who already like volcanic landscapes and want a quieter pause between Gerðuberg, Eldborg, and the broader Snæfellsnes Peninsula Road Trip. Skip it for a group chasing only iconic waterfalls, beaches, and easy staffed stops.
The best reason to include it is context. Ljósufjöll helps explain why West Iceland has so many crater, lava, and basalt stops close together. If that makes your day richer, add it. If you need an obvious headline sight, use your time elsewhere.