Russell Island

Russell Island

Natural Attr
Last Updated: July 2026

Type

Island

Accessibility

Boat-based viewing

Best Season

Late May through early September

Busiest Season

July

Features

Recently deglaciated bedrock island, now covered in vegetation; a broad, open alluvial fan on the eastern shore; measurable isostatic rebound of about 32 mm (1.26 inches) per year.

Overview

About This Attraction

From the water, Russell Island reads as a green, forested rise set against a large U-shaped valley in the mountains beyond — hard to square with what John Muir saw here in 1879, when the island was a bare rocky hummock emerging from the face of the retreating glacier. Its entire forest has grown up in the years since, a plant-succession clock running in real time. The island is still responding to the ice, too: pressed into the mantle under thousands of feet of Little Ice Age ice, the land here is now rising about 32 mm (1.26 inches) per year through isostatic rebound — the fastest in the world. Scan the broad, open alluvial fan on the eastern shore as you pass; wildlife regularly patrols it.

Quick Facts

Type

Island

Access

Boat-based viewing

Main Features

Recently deglaciated bedrock island, now covered in vegetation; a broad, open alluvial fan on the eastern shore; measurable isostatic rebound of about 32 mm (1.26 inches) per year.

What You'll See

A forested island set before a large U-shaped valley in the mountains beyond, and the open alluvial fan of the eastern shore, where wildlife regularly patrols.

What Makes It Special

Under thousands of feet of ice during the Little Ice Age, the landscape here is now rising about 32 mm (1.26 inches) annually — the fastest isostatic uplift in the world.

Best Time to Visit

The main visitor season runs late May through early September, with July the peak month; park services are extremely limited outside that window.

Safety Considerations

Wildlife rules apply from the water: keep at least 100 yards from bears and wolves and 25 yards from other wildlife. There are no visitor facilities listed for the island — plan around your vessel, not the shore.

Visitor Tips

  • Scan the broad, open alluvial fan on the island's eastern shore — wildlife regularly patrols this stretch.
  • The narrow channel between the island and the mainland is the classic viewing lane; have binoculars ready before you enter it.
  • Keep at least 100 yards from bears and wolves and 25 yards from other wildlife.
  • Read the vegetation as a timeline: this forest postdates 1879, when the island was bare rock at the glacier face.
ℹ️ Data Sources

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