Mammoth Cave

Mammoth Cave is one of the largest lava tubes in Utah, with over 2,200 feet of passage on the Markagunt Plateau in Dixie National Forest. It was formed by cooling lava and sits at about 8,050 feet elevation. The cave stays cool year-round and has multiple entrances and interconnected tubes. It remains undeveloped—no lights or paved walkways—so self-guided exploration requires a headlamp and sturdy shoes. Difficulty is moderate, with some crawling and tight passages.

Highlights

• Over 2,200 feet of passage in a lava-tube system
• Multiple entrances and interconnected passages
• Cool cave temperatures year-round
• Access road: mix of paved and dirt; last ~3 miles suitable for standard vehicles when dry

Tips

Bring a headlamp (and a backup light) and wear shoes you don't mind getting dirty. Stay cautious during rain—flooding is possible. Seasonal bat closures can apply in colder months, so verify current Dixie National Forest access before you go.

When to go

Spring Summer Fall Winter

Best planned from late spring through early fall when forest roads are dry and accessible. Seasonal bat closures can apply from October through April. The access road is about 7.5 miles from Duck Creek Village.

What to bring

• Headlamp and a backup light source
• Sturdy shoes you do not mind getting dirty
• Long pants and layers — cave stays cool year-round
• Gloves for crawling sections

Stay planning

Once this stop is on your list, use Plan Your Days for itinerary ideas or compare our rooms and cabins to match the style of trip you want.