Eddystone Rock, Alaska: Majestic 237-Foot Basalt Sea Stack Formed 5 Million Years Ago #3446378 (License: Personal Use)

Eddystone Rock is a dramatic 237-foot basalt sea stack located in the Tongass Narrows near Ketchikan, Alaska, formed roughly five million years ago as a volcanic vent. Its rugged, columnar structure is now draped in lush greenery, including spruce and hemlock, while surrounding waters reflect the misty coastal mountains of the Tongass National Forest. The rock serves as both a navigational landmark and a habitat for seabirds, embodying the raw beauty of Southeast Alaska’s fjord-like landscape.

This image is commonly used on travel blogs, geological education sites, and tourism pages promoting Southeast Alaska cruises or outdoor adventures; it satisfies user intent for scenic photography, natural history facts, or trip planning inspiration.