Ruby Falls is a 145-foot underground waterfall inside Lookout Mountain near Chattanooga, Tennessee

Ruby Falls is a waterfall that flows inside a cave system carved through Lookout Mountain. The cave entrance sits about 1,100 feet up the mountainside, and the waterfall drops 145 feet into an underground pool. The site has been open to visitors since 1930, when the cave was first developed for tourism.

The waterfall itself is the main attraction — it's the highest underground waterfall open to the public in the United States. The cave system extends beyond the waterfall chamber, with passages and rooms that visitors walk through as part of the tour. The entire visit typically takes 45 minutes to an hour.

Key Takeaways

  • Ruby Falls is located inside Lookout Mountain in Chattanooga and requires a paid tour to visit — there is no independent cave exploration.
  • Tours run year-round, multiple times daily, and the cave maintains a constant temperature of around 60 degrees Fahrenheit regardless of outside weather.
  • The walk includes stairs and uneven surfaces, so comfortable shoes and a reasonable level of physical fitness are necessary.
  • Parking and admission are handled at the base of the mountain, and you take an elevator up the mountainside before entering the cave.

How to reach Ruby Falls and what to expect on arrival

Ruby Falls is located at 1720 South Crest Road in Chattanooga, Tennessee. You drive to the base of Lookout Mountain, where there is a parking area and visitor center. From there, you board an elevator that travels 260 feet up inside the mountain to reach the cave entrance.

The visitor center has a gift shop, restrooms, and a snack bar. Admission is paid at the ticket window before you go up the elevator. Hours vary by season — the site is open year-round, but opening and closing times shift between summer and winter. You should check the official Ruby Falls website or call ahead to confirm hours for the day you plan to visit.

What the tour covers and how long it takes

Once inside the cave, a guide leads groups through the passages to the waterfall chamber. The route includes walking on paved paths and climbing stairs — some sections are steep. The cave is lit with electric lighting installed along the walkway, so you don't need a flashlight.

The tour stops at the waterfall chamber, where you can see the full 145-foot drop and feel the mist from the water. Guides usually explain the geology of the cave and how the waterfall formed. The entire tour from cave entrance to exit takes approximately 45 minutes to an hour, depending on group size and how long the guide spends at each stop.

Physical demands and what to bring

The cave tour involves walking on uneven surfaces and climbing multiple flights of stairs. The paths are paved and lit, but they are not flat. If you have difficulty with stairs or walking for extended periods, you should discuss this with staff before purchasing admission — some sections may not be accessible depending on your mobility.

The cave stays around 60 degrees Fahrenheit year-round, so bring a light jacket or sweater even if it's warm outside. Wear closed-toe shoes with good traction — the paths can be damp and slippery. The cave is humid, so moisture may form on glasses or camera lenses. Cameras and phones are permitted, though flash photography is typically not allowed inside the cave itself.

Admission cost and what's included

Admission prices vary by age — there are typically separate rates for adults, children, and seniors. Prices change seasonally and may differ for online advance purchase versus tickets bought at the gate. The admission fee includes the elevator ride up the mountain, the guided cave tour, and access to the waterfall chamber.

The visitor center at the base has a gift shop and snack bar, but these are separate purchases. Some tour packages may bundle admission with other attractions on Lookout Mountain, such as the Incline Railway or the Battlefield Park, but these are optional add-ons.

Best times to visit and how crowded it gets

Ruby Falls draws the most visitors during summer months and school holidays. Weekends are busier than weekdays. If you prefer smaller groups, visiting on a weekday during fall or winter will likely mean shorter waits. Tours run continuously throughout the day, so even during busy periods you won't wait more than an hour or two for the next available tour.

The cave itself maintains the same temperature and humidity year-round, so there is no seasonal advantage for comfort inside. The main difference is how many people are on your tour group and how long you wait before entering the cave.

Nearby attractions and how to plan your visit

Ruby Falls sits on Lookout Mountain, which has several other tourist sites within walking distance or a short drive. The Incline Railway, a historic funicular that climbs the mountain, is nearby. Point Park and the Battlefield Park are also on the mountain. Chattanooga's downtown area, including the Tennessee Aquarium and Hunter Museum of American Art, is about 10 minutes away by car.

Many visitors combine Ruby Falls with other Lookout Mountain attractions in a single day. If you plan to visit multiple sites, check whether combination tickets or passes are available, as they may offer savings over individual admissions.

Frequently Asked Questions

Can you visit Ruby Falls without taking a guided tour?

No. All visits to Ruby Falls are guided tours — you cannot explore the cave independently. Tours are led by staff members who control access to the cave passages and provide information about the geology and history.

Is Ruby Falls safe for children?

Ruby Falls is generally safe for children who can walk and climb stairs without information. The paths are lit and paved, and guides manage group movement. Very young children or those with mobility challenges may find the stairs difficult. Check with staff about your child's age and ability before purchasing admission.

What if I'm claustrophobic or uncomfortable in caves?

The main passages are wide and well-lit, so the cave does not feel extremely confined. However, if you have significant anxiety about being underground or in enclosed spaces, you may want to reconsider. Staff can describe the cave layout in more detail if you call ahead to discuss your concerns.

Can you swim in the pool at the base of the waterfall?

No. Swimming is not permitted in the waterfall pool. The water is cold, and the area is restricted to viewing only. Visitors stay on the designated walkway around the chamber.

What happens if I'm not physically fit enough to complete the tour?

If you become unable to continue during the tour, guides can usually escort you back to the entrance or elevator. It's better to discuss any concerns about stairs or walking distance with staff before you start, so they can set expectations or suggest alternatives.