Gapyeong's Mudangso Valley: Free Diving, Clear Waters & More

Gyeonggi-do, Gapyeong

Mudangso Recreational Area

Gwangak Minbak / Wildflower Camp

Smooth out your travels, this is Yeohaeng Yunhwal-yu.

Even though the peak summer heat has started to subside in mid-August 2026, temperatures are still hovering above 86°F (30°C).

If you're looking for a refreshing day trip from Seoul, let me introduce you to Mudangso Recreational Area in Gapyeong, Gyeonggi-do.

Located in the stunning Hwaaksan Valley, Mudangso offers free life vest rentals and is easily accessible by bus, making it perfect for those relying on public transportation.

Location

✔ Address: 912-2 Hwaak-ri, Buk-myeon, Gapyeong-gun, Gyeonggi-do (around 1135-16 Hwaaksan-ro)

✔ Search on map: Gapyeong Wildflower Camp, Gwangak Minbak

✔ Public Transport: Alight at Nosseoteo Ip-gu (Nosseoteo Entrance) using Bus 50-4

✔ Approximately 1 hour and 30 minutes drive from Seoul

This valley is fed directly by the cool waters flowing down from Hwaaksan Mountain.

While the main Hwaaksan Valley is known for its notoriously cold temperatures, Mudangso is a touch less frigid, making it surprisingly more comfortable for prolonged water activities.

The valley is conveniently located right next to Gwangak Minbak and Wildflower Camp, making it easy to find.

Parking

✔ Roadside Parking: Approximately 10 spots along the road above the valley

✔ Guesthouse Parking:

Available if you utilize the facilities at Gwangak Minbak or Yeongsimi-ne Pyeongsan (flat resting area)

✔ Public transportation is also an option

While there are now some roadside parking spaces, they are quite limited. If you don't arrive early on a weekend morning, you'll likely struggle to find a spot.

From the parking area to the valley, there's an unpaved downhill section. Be sure to move carefully to avoid slipping.

Since the roadside parking is very scarce if you're not staying at a guesthouse, arriving early is your safest bet.

Water Activities

✔ Visited on: August 8, 2026

✔ Life vests are mandatory (free rental)

✔ Maximum Depth: Over 13 feet (around the rocks)

✔ Diving Point: You can jump into the water from the rocks

As soon as you descend into the valley, you'll immediately think, "This looks like a great spot for diving!"

Centered around a large rock, there's a spot where the water reaches over 13 feet deep, making it perfect for diving off the rocks.

The water is incredibly clear, offering excellent visibility right to the bottom. I couldn't get an exact measurement of the depth because I was wearing a life vest.

This valley is deep enough that even an adult male cannot touch the bottom when diving, so it's a place where you need to exercise caution.

Another advantage of this spot is the natural shade provided by the surrounding trees, offering a welcome respite from the scorching sun.

💡 Highly recommended for anyone who loves to dive!

💡 It's still relatively unknown, so it tends to be less crowded than other valleys in Gapyeong.

Life Vests

✔ Life Vests: Free rental

✔ Safety Personnel: On-site

✔ Life vests are mandatory

Safety personnel are always on-site and provide life vests for free. You'll just need to provide your name and phone number to borrow one!

Even if you bring a tube, you won't be allowed into the water without wearing a life vest.

💡 Arrive early, as life vests can run out during peak times.

Eating & Restrooms

✔ Eating & Cooking: Prohibited

✔ Restrooms: Available near the roadside parking area

This is a place where not only cooking but even eating is prohibited, so if you bring food, you won't be able to consume it in the valley itself.

It's best to plan your meals before you arrive or after you leave.

Restrooms are conveniently located near the parking area, though be aware they might not be the cleanest.

While eating is prohibited at Mudangso Recreational Area, the excellent diving spots and crystal-clear waters more than make up for any inconvenience.

Head out early in the morning to secure a parking spot, grab your free life vest, and jump right in for a perfect day trip to a Gapyeong valley.

Where have you enjoyed swimming in a valley this summer? Share your favorite spots in the comments to help out other travelers!

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