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    Three Flags Rv Park

    4.7 (14 reviews)

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    Three Flags RV
    Kaye S.

    If you need a base camp from which you will range out to explore consider Three Flags. IMHO this is not a place to relax at the RV since it has no shade and it is near the highway. But ideal for us and it is well run, has crazy clean bathrooms and a laundry. Owner is friendly, kind and efficient to work with.

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    Review Highlights - Three Flags Rv Park

    We were also able to do our four loads of laundry at once- wow without having to go to a laundromat!

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    Jewel Cave National Monument - Wet cave.

    Jewel Cave National Monument

    4.2(65 reviews)
    39.8 mi

    Jewel Cave is a must see if you're passing through Custer, SD. It is so amazing and wonderful site…read moreto see and experience the creation our planet's gives us. Such a rich historical site in geological formations; will leave you in awe. The cave is so big and such a mystery leaving you with so many questions that go unanswered. The guides give you a good explanation on how things formed and happened in the cave but it still makes you question the answers they give. The planet offers so much beauty and this cave is one of the beauties it offer. Stop by and experience the underground mystery at Jewel cave.

    I love caves, and I loved the Scenic Tour I went on! This cave is one of the world's longest caves,…read morewith passages still being explored and mapped out to this day. I thought the tour was very well done, and I saw a lot of calcite crystals (and other formations) which gave the cave its name. Be warned though, you have to bundle up for the tour as the inside is 49°F / 9°C year-round, and you must wear closed-toe shoes. The Scenic Tour itself is a guided tour that has over 700 steps and covers 1/2 miles underground. Some of the pathway's ceilings are low, so if you're tall be sure to duck when the ranger tells you. There is lighting all the way so you can see when the low sections are coming. I learned a lot about the cave, its history, and how it's currently being maintained. The steel walkways have catch trays for lint and other stuff that falls off of guests, and when they clean it annually it has around 17 lb of "stuff". They really try to balance cave preservation with accessibility to the public. I highly recommend this tour.

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    Jewel Cave National Monument - Jewel cave sign

    Jewel cave sign

    Jewel Cave National Monument
    Jewel Cave National Monument

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    Custer State Park

    Custer State Park

    4.7(288 reviews)
    28.1 mi

    This place should be a national park, in my opinion!…read more Going in to it with an open mind is important--wild animals are, in fact, wild and can't be predicted or controlled! That being said, you're almost guaranteed to see SOMETHING. We were lucky enough to get stuck in a bison jam, see the burros and a number of deer and prongtails. Get up early or take a drive around dusk if you miss the wildlife during the day. It's a beautiful, diverse park. Needles highway is a must do and is so cool to see the rock formations. Starting after the wildlife loop and driving to Sylvan Lake was amazing and the lake offered a great break from the car. We wish we would have planned for more time at the lake and come prepared with swimsuits, etc! Even if just visiting for a day, I think the $25 park entrance fee is worth it. But if you have the time, plan to take your time and spend more than one day here!

    Don't forget to pack fresh apples and carrots before hitting up CSP's wildlife loop ;)…read moreCuster SP is a beautiful must-visit. Begging burros, Sylvan Lake, Needles Hwy's narrowest tunnels, bold geese, prairie dog town. Amusing sights for all! Thought I followed all of National Treasure's instructions at Sylvan Lake. Maybe you'll have better luck unlocking that treasure cavern haha . Couldn't find anyone at the pay station entrances to ask some questions ;) + Restrooms and a few water bottle refill stations throughout the park. Thanks again Stan for the suggestion!

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    Custer State Park
    Custer State Park - Bison Center

    Bison Center

    Custer State Park - Sylvan Lake Kayaking

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    Sylvan Lake Kayaking

    Three Flags Rv Park - parks - Updated July 2026

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