Hoosier National Forest Forest Road 4602 Hemlock Bluff Circuit
Technical limestone canyon route through rare hemlock groves
Forest Road 4602 cuts through the Hemlock Bluff Recreation Area where limestone outcroppings create narrow passages that’ll scrape paint off anything wider than a Jeep. The route winds through old-growth hemlock groves—rare survivors in southern Indiana—before dropping into Salt Creek’s drainage where seasonal water crossings can turn nasty after spring rains. Pioneer Cemetery marks the halfway point, a sobering reminder of the homesteaders who tried to farm this unforgiving terrain.
This is genuine technical driving demanding high clearance and skid plates, with several spots requiring careful line choice through boulder fields. Stock trucks with good tires can handle it in dry conditions, but bring recovery gear and don’t attempt alone. Best tackled April through October when creek levels are manageable. The reward is access to some of Indiana’s wildest country, with dispersed camping opportunities and hiking trails that most Hoosiers never see.
Trail Specs
| Difficulty | Moderate |
|---|---|
| Trail Type | Technical 4x4 |
| Surface | Mixed |
| Features | Camping, Historic, Remote, Water Crossings |
| Length (miles) | 12 mi / 19.3 km |
| Duration | 4-6 hours |
| Max elevation (ft) | 920 ft |
| Best season | April-October |
| Minimum vehicle | Stock 4WD high-clearance |
| Nearest town | Tell City, Indiana |
| Land manager | U.S. Forest Service |
| Permit required | No |
| Cell service | None |
| Water crossings | Yes |
| Dispersed camping | Yes |
| Official sources | fs.usda.gov |
| Start coordinates | |
| End coordinates | |
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Location
Trail Conditions
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Frequently asked questions
Can a stock 4Runner or Wrangler handle this trail without modifications?
Yes — a stock high-clearance 4WD is the listed minimum and will get through, but low-range is mandatory on the canyon switchbacks. Longer wheelbase rigs like full-size trucks may have trouble with the tight limestone turns.
When does FR 4602 typically open after winter and are there seasonal closures?
The trail runs best April through October. Indiana winters bring freeze-thaw cycles that turn limestone canyon approaches to mud soup, and the Forest Service occasionally closes forest roads during wet periods to prevent resource damage — check fs.usda.gov/hoosier before you leave.
Do I need a permit to run this trail or camp overnight?
No permit is required to drive FR 4602 and dispersed camping is free under standard Hoosier National Forest rules. Keep camps 150 feet from water sources and pack everything out — there are no facilities on this route.
What's the hardest section and what actually makes it technical?
The tightest limestone canyon turns are the crux — rock walls on both sides leave zero recovery room, and off-camber creek crossings follow immediately after. The difficulty isn't raw obstacle size; it's the combination of confined space, slick wet limestone, and no bailout if you get a wheel in the wrong place.
Are the water crossings passable after rain and is there any gas or services near the trailhead?
After heavy rain the creek crossings can rise fast and become impassable — this is not a trail to run during or right after a significant storm. Tell City is your last fuel and resupply stop; fill up there because you'll have zero cell service for the entire 12 miles and no services exist on route.
Trail track
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