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Jangansan County Park

The park rewards choosing one landscape and giving it time.

About

The park rewards choosing one landscape and giving it time. On the mountain, woodland gives way to the eastern ridge’s grassland and a 1,237 m summit. Below, the stream carves the focus of the visit: bends in the valley, deep pools and short views framed by trees. These are separate starting points, so decide which experience you want before setting your navigation. For a first visit, a return to the same trailhead keeps the day straightforward. A mountain-to-valley traverse needs a confirmed open route and transport waiting at the far end. Enhance your adventure: download the Snappit app to identify the local species you encounter.

Jangansan became a Jangsu county park on 18 August 1986. Its local identity includes both the high mountain and the valleys around it. The name Yongso, used for the pools below, evokes dragons in local stories; enjoy that layer of folklore without mistaking it for an explanation of how the river landscape formed.

What to do here

Walk the Muryonggogae summit route for the ridge, follow the Banghwadong Ecological Trail through Deoksan Valley for water and woodland, or consider the longer Jangsu (Jangansan) Masil-gil for a lower-slope through-walk. Keep photography stops on the path: the grassland and stream edge are part of the habitat you came to see.

Seasonal info

Fire-season restrictions depend on the exact route. The current-access section explains the county’s notice for November 2026 to May 2027; a trail’s appearance on a tourism page does not settle whether it is open on your visit.

Accessibility

The summit is a hiking route. The valley includes uneven ground, decks and stream crossings; it is not established as a continuous step-free route. If you need wheelchair access, a firm surface throughout or very limited gradients, ask the operator about a specific accessible section and its return path before travelling.

Don't miss

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Eastern-ridge silver grass and a high summit outlook

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Upper and Lower Yongso, the valley’s distinctive deep pools

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A separate 10 km valley return on the Banghwadong Ecological Trail

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A choice of ridge, valley or lower-slope walking days

Walks and routes

Muryonggogae to Jangansan summit

The main ridge choice starts at Muryonggogae and ends at Jangansan’s summit. The county publishes 3.2 km and 1 hour 30 minutes one way. Walk out and back for about 6.4 km, allowing 3–4 hours with rests. Follow the signed Jangansan direction from the pass and use the ascent route for your return. Official summit-course list.

Expect a sustained hill walk with changing surfaces and an exposed upper section. A high starting pass reduces the total climb, but it does not make the summit a roadside viewpoint. Keep enough energy for the return and turn back before visibility or footing deteriorates.

Muryonggogae to Jangansan summit

Deoksan Valley and Banghwadong Ecological Trail

Begin at Jangansan County Park car park on the Deoksan side, pass Upper Yongso and Lower Yongso, and continue toward Banghwa Waterfall and Banghwadong Family Holiday Village before returning. The dedicated course sheet gives the full return as 10 km and 4 hours; the county page gives 3 hours. Allow 4–5 hours rather than treating either as a deadline. Course, start point and route overview.

The route mixes woodland walking, rocky ground, wooden decks and stepping-stone crossings. Choose the signed, open side of the stream and retrace your way when a crossing is unsafe; never make crossing a rising stream necessary to reach your vehicle.

Deoksan Valley and Banghwadong Ecological Trail

Jangsu (Jangansan) Masil-gil

This 11 km, 4-hour-30-minute through-walk links Yeonju village entrance with Wonjang-an bus terminus via Mudeurigyo, Jisilgaji and the Jang-an-ri forest road. It provides a lower-slope alternative to the summit. The endpoints are different: arrange the return journey before setting off. Masil-gil route and endpoint links.

The official sheet rates the course moderate. A forest-road segment does not establish step-free access for the whole route; the full distance still makes this a substantial walking day.

Jangsu (Jangansan) Masil-gil

A first autumn ridge visit

Start with the forecast and the pass approach, then walk toward the silver grass at an unhurried pace. Continue to the summit only if the group has time and energy for the same way back. Eat away from the walking line, add a layer before cooling down and descend early enough to avoid racing your transport. Leave the valley for another outing.

A valley day with a flexible finish

Begin at the Deoksan-side car park and make the two Yongso pools your first objective. Reassess there: continue toward Banghwadong only if crossings, daylight and everyone’s energy allow. Turn back earlier for a shorter day. Keep your lunch packed and ready to eat; the no-cooking rule makes a stove or barbecue the wrong plan for this protected valley.

Things to try

Photograph the ridge in changing light

Build time for the grassland into the ascent rather than rushing straight to the summit marker. Backlighting can reveal the texture of flower heads, while a wider view shows the grass against wooded slopes. Work from a safe stopping place and let other walkers pass before unpacking a tripod.

Make the pools your valley destination

Upper and Lower Yongso give the valley walk a clear purpose even when you choose a shorter day. View the pools from the walking route. The steep rock and depth are reasons to keep your distance, especially with children; a photograph does not require stepping onto wet slabs.

When a valley walk is the wrong fallback

If the ridge is simply hazy, an open valley route in settled weather can still work. If heavy rain or thunderstorms are the problem, avoid exchanging exposed terrain for a rising stream. Postpone the outdoor walk, spend the time in Jangsu town and choose a new weather window rather than trying to salvage every kilometre.

Wildlife and habitats

Silver grass (Miscanthus group)

The eastern ridge’s silver grass is the park’s signature plant landscape. Autumn flower heads catch the light, while narrow leaves show a pale central vein. Look from the trail rather than walking into a stand for a portrait. The grassland also has a restoration programme, so individual patches should not all be assumed untouched or naturally established.

Balsams (Impatiens group)

The county names mulbongseon among Deoksan Valley’s wildflowers. These balsams add a smaller-scale reason to slow down beside the wooded route. Leave flowers and seed pods in place. Here, the county specifically names mulbongseon; other kinds of balsam should not be assumed to grow along the route.

Stories and discoveries

A waterfall with an operating schedule

Banghwa Waterfall is a constructed feature using water from Yongnimje. Its height and cliff setting can make it look like a permanent natural cascade, but water flow is controlled. Treat it as a possible addition to the walk, not a reason to push onward when conditions are poor.

When to visit

Spring: green slopes, route-specific controls

Spring is a chance to enjoy fresh woodland growth, but seasonal fire controls can remove the through-routes that make a map look convenient. Start with the current route list and be ready to choose another walk rather than improvising a descent.

Summer: shade with a weather check

The valley’s woodland makes it an appealing warm-weather outing. Choose stable weather and normal stream levels, bring water and shorten the walk if heat builds. After heavy rain, postpone crossings and pool-side wandering even when the lower entrance looks calm.

Autumn: grassland and foliage

Give the ridge a clear-weather day and the valley a separate foliage walk if your schedule permits. Bring a windproof layer for exposed stops. Seasonal colour and grass-head condition vary, so plan for the landscape rather than a guaranteed peak-colour date.

Winter: a different level of preparation

Snow can transform the mountain’s bamboo-lined slopes, but ice and wind change the effort and consequences of a slip. Attempt the ridge only with suitable winter experience, equipment and a confirmed road approach. A valley walk is not automatically an ice-free fallback.

Getting there and practical advice

Parking, entry and basic supplies

The valley course sheet identifies parking at its start/end. Banghwadong’s family holiday village has camping and accommodation facilities, but these are separately managed services. Check entry charges, booking requirements and current toilet provision directly; do not assume that a day walk includes a campsite or that every trailhead has the same facilities.

Useful local contacts

For recreation and trail questions, the county course page lists the forestry recreation team at 063-350-2473 and Banghwadong’s management office at 063-350-2475. Tell them your intended starting point and named route. This makes it easier to ask about a closed crossing, a forest-entry fee or an accessible short section.

Getting to the right side of the park

For a summit return, navigate to Muryonggogae in Jangsu and check the approach road before driving up. For the valley, use the car-park map link on the dedicated Banghwadong course sheet, which identifies Deoksan-ri san 51. The valley attraction address and various older car-park references are not interchangeable pins. Save the actual meeting point if arranging a pickup.

Bus travel needs a confirmed last connection

The valley course information describes a bus from Jangsu toward Deoksan, followed by a walking approach from Yongnimje junction. It calls that stop informal, so confirm with Mujinjang bus company, 063-433-5282, before relying on it. Ask about both directions and the precise drop-off. Published tourist timetables are not a guarantee of today’s service; prearranged local transport may be simpler if connections do not fit.

Choose by surface as well as distance

A short section can still have a difficult step, narrow deck or slippery crossing. Ask for the exact start, surface, obstacles and available toilet rather than a general answer that the valley is easy. For mixed-ability groups, agree on a turnaround everyone can manage and keep the return on a route already checked.

Visitor information

Check your route before leaving

Checked 18 October 2026: a county notice schedules controls from 1 November 2026 to 15 May 2027, with possible extension. Its attached route list marks Muryonggogae–summit open, but closes the summit approaches from Milmokjae, Jisogol, Samgeo, Yeonju and Beomyeondong, plus Goemokdong–Muryonggogae. Even an open-listed trail can be controlled during sustained fire danger. This does not confirm today’s weather, road access or valley crossings. Check with the county forestry team at 063-350-2465 and follow on-site notices; ask separately about the valley and Masil-gil if using them.

Sources and useful links

Wildlife you might spot

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Good to know before you go

Save the Korean names 무룡고개 and 장안산군립공원 주차장: they refer to different starting areas.

Carry your drinking water, food, warm layer and a light; do not plan a summit day around unverified shops or springs.

Choose a turnaround time that leaves daylight for the descent and your actual onward transport.

Keep clear of pool edges and wet rocks; do not use a scenic pool as a swimming recommendation.

Cooking is prohibited in the Deoksan nature-protection area. Pack a ready-to-eat meal and take all waste out.

Stay out of planted or recovering grassland and respect temporary ropes and work barriers.

Frequently asked questions

No. The county lists Muryonggogae to the summit as 3.2 km one way. Retracing it makes approximately 6.4 km, calculated from that published distance; the 90-minute official time is also for the listed one-way course.
Only with a suitable open descent and a transport plan. Returning to Muryonggogae is the simpler first-visit choice. Several routes toward the lower settlements are listed for closure in the upcoming fire-control period, so a summit-to-valley descent cannot be assumed available.
The full published return is 10 km. For a gentler visit, take an out-and-back on an open section and turn around while everyone is comfortable. Decking and a lower elevation do not remove the footing demands or the need to get back.
It is an artificial waterfall fed from Yongnimje reservoir, and its display depends on operation. Ask about the day’s running times if seeing it is important; the pools and woodland still provide the main valley experience.

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