Trail

Glacial Erratic – Forest Loop Trail

Trail
A moss covered boulder alonside a narrow snaking trail.

Short forest loop in Bartlett Cove showcases a massive glacial erratic—a boulder transported by ancient glaciers. No scrambling or technical challenges. Watch lichen and moss actively breaking the rock into soil. Accessible geology lesson proving that even stone yields to time and weather.

Quick facts

Route Type
Loop
Difficulty Level
Easy

Trail profile

Route Type
Loop
Difficulty Level
Easy
Trail Surface
Forest floor with roots and moss
Trail Features
  • Glacial Erratic
  • Forest ecosystem
  • Lichen and moss
  • Glacial geology evidence
Trail Highlights
View a massive glacial erratic—an ancient boulder transported by receding glaciers from up the bay. Observe lichen and moss actively breaking down the rock into soil, demonstrating slow geological transformation over millennia.

Trailhead & access

Trailhead Location
Bartlett Cove
Shuttle Required
0
Shuttle Details
Not required

Permits & conditions

Permit Details
Not required
Fees
No entrance fees
Trail Status
Open

Facilities & rules

Restrooms At Trailhead
0
Accessibility
Forest terrain with roots and moss; short walk accessible to most mobility levels

Safety & strategy

Hazard Details
No specific hazards mentioned
Best Season
Late May through early September
Best Time To Visit
Late May through early September. Peak season July—maximum services and most stable weather. Start early morning to beat the fog that commonly rolls in by midday in Southeast Alaska.
Tips Advice
  • Layers are non-negotiable—Southeast Alaska weather shifts fast and hard.
  • The glacial erratic's lichen is fragile; observe but don't touch or climb.
  • Rain jacket is mandatory; the forest never fully dries.
  • Carry 2L water minimum; no reliable source on this short loop.

More details

Park Area
Bartlett Cove
Shade Level
Mostly shaded forest cover
Emergency Contacts
Glacier Bay National Park visitor services in Bartlett Cove area
Map Recommended
0
Insider Tips
  • The forest loop highlights a single large glacial erratic—a boulder left behind by receding glaciers.
  • NPS notes that lichen and moss are actively breaking the rock into soil.
  • This demonstrates ongoing geological weathering you can observe firsthand.
Family Friendly Notes
Short walk accessible to most families. No scrambling, climbing, or exposed edges mentioned. The pacing allows close observation of geological details. Nearby Bartlett Cove amenities and services support family stops.
Nearby Facilities
Bartlett Cove Campground, Glacier Bay Visitor Information Station
Review Summary
This short forest walk offers a tangible introduction to glacial geology and ongoing weathering processes. Accessible to most fitness levels and suitable for educational family outings. Hikers value the focused, achievable lesson in Earth history.

Location

Frequently asked questions

Is this trail strenuous?

No. This is a short forest walk suitable for most fitness levels. No climbing, scrambling, or steep sections are mentioned. It's designed as an educational stop to view a geological feature.

Is it safe to hike alone?

Yes. It's located in Bartlett Cove's developed visitor area near ranger services and the campground. No wilderness exposure or specific hazards are mentioned. Stay on trail and bring water.

What should I bring?

Water (2L minimum), a rain layer (Southeast Alaska weather shifts fast), and sturdy walking shoes for forest terrain with roots and moss. No technical gear required.

Why is it called a glacial erratic?

This massive boulder was transported by ancient glaciers from up the bay and left behind when the ice receded. It's called an 'erratic' because it's geologically out of place, surrounded by different rock types. Lichen and moss are breaking it down into soil.

Is this suitable for young children?

Yes. It's a short walk with educational focus in a developed area with nearby amenities. No drops, scrambling, or technical challenges are mentioned. Supervision recommended as with any outdoor activity.

What will I see on this trail?

An enormous boulder (glacial erratic) covered with lichen and moss. The trail teaches how glaciers shaped Glacier Bay's landscape and how ongoing weathering processes break down rock into soil. This is geology in real time.

Sources

Information is compiled from official sources, verified traveler reviews, and editorial research. Learn how YourNPGuide works.

Last updated July 2026. Report an issue.