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A Park Hub Field Guide

Lat 41.6338° N
Long 87.0544° W

Elevation580 – 795 ft

Indiana · Stamp 48 / 63

Indiana Dunes

National Park · Established 2019

Fifteen miles of Lake Michigan shoreline, ranked among the most biodiverse national parks despite sitting between two steel towns.

Area15,349 acres

TrailheadPorter, Indiana

Visitors3.5M / yr

Scroll to begin the ascent

Live · Beaches and trails open Indiana Dunes State Park sits inside the national park boundary with its own separate fee 1 active alert 74°F · lake breeze keeps it milder than inland Live layer, from the National Park Service

Best windowMay–Sep for swimming · fall for dune-succession color Getting there45 min from Chicago · 30 min from Gary Fee$25 / vehicle beach parking · 7 days

★★★★★ 4.6 from 1 travelers 1 visitor stories 3.5M annual visitors Grounded in live NPS data

Indiana Dunes · Mile 01 · The Story

Fifteen miles of dunes,
between two steel towns.

Indiana Dunes protects fifteen miles of Lake Michigan shoreline squeezed between the industrial cities of Gary and Michigan City, an unlikely setting for a national park that also happens to rank among the most biologically diverse in the entire system. Wind and waves have shaped this shoreline for millennia, creating a compressed sequence of habitats, from open beach to dune to woodland to wetland, that can shift dramatically within a few hundred feet of walking.

Mount Baldy, a 126-foot dune on the park's eastern end, is slowly moving inland and burying the forest behind it, a process visible enough that visitors are no longer allowed to climb the dune itself due to a partially collapsed sand pocket. The park was upgraded from a national lakeshore to a full national park only in 2019, a designation change that surprised even some longtime Indiana residents who hadn't fully registered a national park existed in their own backyard.

Come for the dunes and the lake. Stay for the fact that a genuinely wild ecosystem survives this close to major industry. Read the story, trust the live data above for what is open today, and when you leave, collect the stamp.

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“

Indiana Dunes National Park was an awesome surprise and proof you don't have to head out west to find great scenery and outdoor adventure.

Adapted from visitor accounts of Indiana Dunes' Lake Michigan shoreline

Lake Michigan Shoreline

"The mountains are calling and I must go."

John Muir

Indiana Dunes · Mile 02 · The Essentials

Best Things to Do in Indiana Dunes

Six ways to spend your time, from a swim in Lake Michigan to a dune that's quietly swallowing the forest behind it.

Swim or walk at West Beach

The park's most developed beach, with a bathhouse, lifeguards in summer, and the Dune Succession Trail nearby.

The signature beach

See

Mount Baldy

A 126-foot moving dune, viewable from the parking lot and beach access trail; climbing the dune itself is no longer permitted.

Everyone · 40 min beach walk

Hike the Dune Succession Trail

A short but genuinely strenuous trail through dune, forest, and open lake views in under a mile.

Half day · some stairs

Explore

Indiana Dunes Visitor Center

Exhibits on the park's unusual biodiversity and its history as an early conservation battleground.

Everyone · 30 min

Birdwatch year-round

One of the most significant birding locations in the Midwest, with hundreds of species recorded across the park's habitats.

Birders · any season

See

Cross into Indiana Dunes State Park

A separately administered state park sits inside the national park's boundary, with its own entrance fee and its own set of dune trails.

Half day · separate fee

Free · Ready in Seconds

Free AI Trip Planner

Plan Your Indiana Dunes Trip

Answer a few questions right here — we'll map your day, stop by stop, with a route, timings, weather, and a packing checklist grounded in real park data. No account, no leaving this page.

Free preview · no card required

When the Crowds ComeMonthly visitors · tap a year

Illustrative shape · wires to official NPS visitation stats · summer peaks shown in gold

Mount Baldy, on the Move

"In every walk with nature one receives far more than he seeks."

John Muir

Indiana Dunes · Mile 03 · Trails & Viewpoints

Best Hikes in Indiana Dunes, by Difficulty

Every trail rated honestly, with distance, climb, and a note on which sections cross into the separately run state park.

Dune Succession Trail

Easy–Mod

1 mi+150 ft~45 min

A short but genuinely strenuous loop with wooden stairs through beach, dune, and forest habitat at West Beach. No permit.

Mount Baldy Beach Trail

Easy

1.5 mi round tripflat~40 min

A walk from the parking area to the beach beneath Mount Baldy; the dune itself is closed to climbing. No permit.

Cowles Bog Trail

Moderate

4.7 mi+250 ft~2.5 hr

A loop through wetland and forest habitat named for the ecologist whose research here helped found the field of plant ecology. No permit.

Great Marsh Trail

Easy

1.6 miflat~1 hr

A flat trail through restored wetland habitat, a good birding spot in any season. No permit.

Heron Rookery Trail

Easy–Mod

3.4 mi+100 ft~2 hr

A quieter, forested trail along the Little Calumet River, away from the beach crowds. No permit.

Separate state park entrance fee

Indiana Dunes State Park Trail 8 (the Three Dunes Challenge)

Strenuous

1.5 mi+552 ft~2 hr

A steep climb over three named dunes inside the separately administered state park, popular as a fitness challenge.

No permit for national park trails · Indiana Dunes State Park inside the boundary charges its own separate entrance fee · Mount Baldy's dune itself is closed to climbing

Indiana Dunes National Park at a Glance

1 Indiana Dunes Visitor Center

2 West Beach

3 Mount Baldy

4 Cowles Bog Trailhead

5 Great Marsh Trail

6 Heron Rookery Trail

Stops shown in visit order. Build a plan above and this map updates to your exact stops.

Indiana Dunes · Mile 04 · Life Between the Lake and the Dunes

Wildlife in Indiana Dunes: Animals You Might See

Tap any animal to learn its story. Soon, the app will let you log what you spot and keep a life list for every park.

An endangered butterfly dependent on wild lupine, found in the park's dune and oak savanna habitat.

The park sits along a significant migratory route, making it one of the most important birding locations in the Midwest.

Common throughout the park's dune and forest edges, occasionally visible at dawn and dusk.

A threatened species found in the park's wetlands, including the Great Marsh restoration area.

Common throughout the park's forested and wetland habitats.

The park's Lake Michigan shoreline supports a range of native and introduced fish species, a draw for shoreline anglers.

Common throughout the park's wooded areas, larger and more reddish than the more familiar gray squirrel.

Plant Life in Indiana Dunes: What Grows Here

The sole food source for Karner blue butterfly caterpillars, found in the park's dune and savanna habitat.

A cactus species found growing in the dunes here, an unexpected desert-adapted plant this far north and east.

The park protects one of the largest remaining black oak savannas in the country, a rare and increasingly uncommon ecosystem.

Common on the active dunes, its extensive root system helping stabilize the shifting sand.

Found on the park's older, more stable dunes, tolerant of the sandy, nutrient-poor soil.

Found in the park's remaining prairie fragments, a tall purple-spiked wildflower blooming in late summer.

Fun Facts About Indiana Dunes

Fact 01

Indiana Dunes ranks among the most biologically diverse national parks in the entire system, despite its small size and industrial surroundings.

Fact 02

Mount Baldy is a living, moving dune, slowly advancing inland and burying the forest behind it; climbing the dune itself is no longer permitted.

Fact 03

The park became a full national park only in 2019, upgraded from a national lakeshore designation held since 1966.

Fact 04

Research on plant succession conducted here by ecologist Henry Cowles in the early 1900s helped found the field of plant ecology as a scientific discipline.

Indiana Dunes · Provisions

Gear for this parkvia AvantLink

Beach towel & swimwearREI

Sturdy shoes for dune stairsBackcountry

Binoculars for birdingOsprey

Stay nearbyvia Hipcamp

Sites near Porter
Fifteen minutes from the visitor center, Lake Michigan access included, from $23 a night.

Free Indiana Dunes checklistdigital · $0

The printable trail and packing checklist in the field-guide style. Take it, join the trail list.

Indiana Dunes · Mile 05 · From the Field Journal

Go Deeper on Indiana Dunes

Stories, guides, and hard-won tips from the trail. The full Indiana Dunes deep dive lives on the journal.

Trip Planning

★Indiana DunesPark Hub · Collected

Your passport

One stamp,
one story.

Log the visit, keep your story, and watch the map of all sixty-three fill in behind you. Every stamp has a keepsake worth holding.

Indiana Dunes · Mile 06 · Where to Next

Keep the Journey Going

Next park

Cuyahoga Valley

Another accessible, near-urban park proving you don't need to go remote for real wilderness.

Open Stamp 40 → The collection

All 63 Parks

See the full map and track every stamp you have earned.

View the map → Plan

Build a Trip

Turn Indiana Dunes into a trip with a custom, day-by-day itinerary.

Start planning → Go deeper

The Indiana Dunes Deep Dive

The long-form guide: every trail, season, and secret, on the journal.

Read it →

Carry the field guide

Offline maps, your passport, and every park in your pocket on the trail.

The Book

Keepsake

The Park Hub field guide

The printed edition, part atlas, part journal, one story per park.

The Shop

Prints · pins · passport

Take Indiana Dunes home

Field-guide posters, enamel stamps, and the passport book to fill in.

Fifteen parks remain

"The parks do not belong to one state or to one section... they belong as much to the man of Massachusetts, of Michigan, of Florida, as they do to the people of California, of Wyoming, and of Arizona."

Stephen Mather · first director of the National Park Service

Begin your journey