Wanderlust World Wanderlust World Iceland sits astride the Mid-Atlantic Ridge, where the North American and Eurasian tectonic plates diverge. This rifting causes the island to slowly widen—but the change over 150 years will be minimal on a human scale.
This widening is distributed across the active volcanic zone (roughly 50–100 km wide), not concentrated at a single crack. It manifests as periodic rifting events (like the 1975–1984 Krafla fires) accompanied by earthquakes and eruptions, rather than steady, smooth expansion.
While geologically significant, a 3-meter increase over a century and a half is negligible compared to Iceland's width (~500 km east-west). Coastal erosion, glacial isostatic rebound, and volcanic construction/destruction have far more immediate impact on the coastline.