Austria Duke of W4 · CC BY-SA 3.0
The cut
349 metres, to scale.
A slice through Stillensteinklamm where it is deepest and narrowest, measured on the Copernicus relief model every 30 m. Same scale as the landmark standing on the floor.
Standing on the floor, to scale: Great Pyramid · 139 m
Depth is measured to the lower rim; the width is from rim to rim. A 30 m relief model smooths the narrowest walls, so a slot canyon reads shallower than it is. This is a narrow canyon: the published depth, where there is one, is the better figure.
349m
Depth
measured on the 30 m relief model
6.2km
Rim to rim
measured on the 30 m relief model
26°
Steepest wall
average over 300 m, from the relief
226m
Floor altitude
Rim to floor
2 °C warmer at the bottom.
In July the afternoon reaches 26 °C on the floor, against 23 °C on the rim. The best months to hike are in May and in September. The rim freezes at night from December to February. The wettest months are from May to August: in a narrow canyon a flash flood arrives without warning, even from rain upstream.
- 3°1°Jan
- 5°2°Feb
- 10°8°Mar
- 16°14°Apr
- 20°18°May
- 24°21°Jun
- 26°23°Jul
- 25°23°Aug
- 20°18°Sep
- 16°13°Oct
- 10°8°Nov
- 5°2°Dec
Afternoon highs, 1991–2020 averages (NASA POWER) brought to the altitude of the rim and of the floor with the standard lapse rate (6.5 °C per 1 000 m). Shade, wind and rock change this on the day. Not a forecast.
Ravine of Gießenbach in Upper Austria
Stillensteinklamm is a slot canyon in Austria, cut by the Gießenbach river. The relief model measures 349 m from the floor to the lower rim. Rim to rim it is 6.2 km wide where the cut was taken.
Getting there.
- Greinnearest town · 2.1 km in a straight line
- Parking 310 m awaynearest car park in OpenStreetMap, straight line
- Viewpointsnearest viewpoint · 1.5 km from the floor
- Linz-Hörsching Airport (LNZ)nearest airport with scheduled flights · 51 km in a straight lineCar hire at LNZ airport (Linz)Discover Cars · sponsored link↗
- In May and in Septemberbest months to hike (estimate)
Plan the visit
Guided hikes, a bed nearby, a car.
Some links above are affiliate links: if you book through them we may earn a commission, at no extra cost to you. It never changes what the data on this page says.
The river
The Gießenbach runs highest in March and from May to October.
The Gießenbach carries about 1,742 m³/s on average here. It runs highest in March and from May to October.
- 1,314 m³/sJan
- 1,524 m³/sFeb
- 1,916 m³/sMar
- 1,772 m³/sApr
- 2,090 m³/sMay
- 2,209 m³/sJun
- 2,367 m³/sJul
- 2,344 m³/sAug
- 2,225 m³/sSep
- 1,892 m³/sOct
- 1,408 m³/sNov
- 1,070 m³/sDec
From about 1,070 m³/s in the lowest month to 2,367 m³/s in the highest. Its basin above this point covers 91,810 km².
Follow the Danube from source to mouth on Riveryas
Estimate: long-term flow from the HydroATLAS model (WaterGAP, 1971–2000) shaped by the monthly rain, snow and temperature of the area (NASA POWER). Dams change it. Not a forecast.
From the sky.
The canyon from above, with the relief shaded, the line of the cut, the river and what people have mapped around it.
N
3 km
Sentinel-2 cloudless 2016 (EOX, CC BY 4.0), 14 × 14 km, north up. The line is the cut above. Points © OpenStreetMap contributors.
Around the canyon.
- 21viewpoints within 5 kmDonaublick, Panoramablick Burg Kreuzen, Alpenblick and 18 more
- 17marked hiking routes within 4 kmBurgen- und Schlösserweg, Mitterkirchen - Grein Donausteig Etappe, Grein - Sarmingstein Donausteig Etappe and 14 more
- 2climbing crags within 3 kmTiefenbach, Kletter- und Boulderhalle Grein
- 12footbridges and suspension bridges within 3 km
- 5rafting, canoe, kayak or canyoning spots within 4 kmSlipanlage Hafen Grein and 4 more
- 10caves within 3 km
- 86car parks within 3 km
- 17information boards and visitor centres within 4 km
- 9bus stops within 2 km
- 4campsites within 8 kmDonau Camping Grein, Waldhausen Wohnmobil-Stellplatz, Camping Krenn and 1 more
- 22hotels and guesthouses within 8 kmPension Martha, Cafe Bar Denube, Hotel Goldenes Kreuz and 19 more
- 18restaurants and cafés within 4 km
- via ferrata routes within 4 km
- swimming spots within 3 km
- named waterfalls within 4 km
Counted in OpenStreetMap, the map anyone can edit, around the floor of the canyon. A low number may just mean nobody has mapped it yet. © OpenStreetMap contributors (ODbL).
Towns nearby
- Grein2.1 km in a straight line
- Bad Kreuzen6.2 km in a straight line
- Nöchling7.7 km in a straight line
- Pabneukirchen10 km in a straight line
- Ardagger Stift11 km in a straight line
- Stephanshart11 km in a straight line
- Münzbach13 km in a straight line
- Amstetten13 km in a straight line
In our other atlases
What else is around Stillensteinklamm.
The river that carved it, the waterfalls inside it, the mountains on the rim, the lakes, beaches and island nearby — from our six sister atlases, each with its own figures.
Riveryas10 rivers in the canyon
Peakyas14 mountains within 15 kmFigures from the sister sites' databases (Wikidata, HydroATLAS, GeoNames, NOAA, OpenStreetMap). Links open when each site is online.
Month by month
The weather, at the floor and at the rim.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Afternoon · floor | 3 | 5 | 10 | 16 | 20 | 24 | 26 | 25 | 20 | 16 | 10 | 5 |
| Afternoon · rim | 1 | 2 | 8 | 14 | 18 | 21 | 23 | 23 | 18 | 13 | 8 | 2 |
| Night · rim | -6 | -5 | -2 | 3 | 7 | 12 | 13 | 13 | 8 | 4 | 0 | -4 |
| Rain (mm) | 79 | 63 | 72 | 56 | 118 | 134 | 131 | 132 | 106 | 74 | 60 | 66 |
| Rainy days | 12 | 12 | 14 | 12 | 16 | 18 | 18 | 15 | 13 | 12 | 12 | 14 |
| Sun hours/day | 1.9 | 3.6 | 4.7 | 6.5 | 6.5 | 7.1 | 7.3 | 6.9 | 5.2 | 3.6 | 1.7 | 1.5 |
| Snow on the ground (cm) | 18 | 17 | 11 | 3 | 0 | 0 | 0 | 0 | 0 | 2 | 7 | 16 |
| Afternoon · floor | Afternoon · rim | Night · rim | Rain (mm) | Sun hours/day | |
|---|---|---|---|---|---|
| Jan | 3 | 1 | -6 | 79 | 1.9 |
| Feb | 5 | 2 | -5 | 63 | 3.6 |
| Mar | 10 | 8 | -2 | 72 | 4.7 |
| Apr | 16 | 14 | 3 | 56 | 6.5 |
| May | 20 | 18 | 7 | 118 | 6.5 |
| Jun | 24 | 21 | 12 | 134 | 7.1 |
| Jul | 26 | 23 | 13 | 131 | 7.3 |
| Aug | 25 | 23 | 13 | 132 | 6.9 |
| Sep | 20 | 18 | 8 | 106 | 5.2 |
| Oct | 16 | 13 | 4 | 74 | 3.6 |
| Nov | 10 | 8 | 0 | 60 | 1.7 |
| Dec | 5 | 2 | -4 | 66 | 1.5 |
Averages 1991–2020 (NASA POWER) for a cell about 55 km wide, brought to the floor (226 m) and the rim (614 m) with the standard lapse rate. Not a forecast.
Photographs
Seen from the trail.
Recent years
Wet years, dry years.
Rain of each month as a share of the 1991–2020 average. A dry year means a lower river and hotter rock; a wet one, more water in the gorge.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2020 | 46% | 185% | 67% | 42% | 113% | 143% | 110% | 146% | 149% | 167% | 33% | 79% |
| 2021 | 110% | 53% | 64% | 90% | 99% | 52% | 119% | 148% | 47% | 53% | 114% | 137% |
| 2022 | 84% | 108% | 26% | 161% | 78% | 105% | 101% | 105% | 114% | 73% | 114% | 77% |
| 2023 | 69% | 133% | 67% | 274% | 74% | 72% | 85% | 123% | 44% | 78% | 261% | 242% |
| 2024 | 89% | 88% | 72% | 132% | 93% | 100% | 99% | 68% | 310% | 80% | 39% | 84% |
| 2025 | 38% | 26% | 127% | 97% | 89% | 74% | 158% | 70% | 96% | 116% | 105% | 31% |
130% or more: wet month 70% or less: dry month
Compare with the neighbours.
Stillensteinklamm
Austria
- 349 mDepth
- 6.2 kmRim to rim
- —Length
- 26°Steepest wall
Where these figures come from
| Name, type, published depth and length | Wikidata (Q1783841) · CC0 |
|---|---|
| The cut: depth, width, wall and 3D model | Copernicus DEM GLO-30 · © DLR e.V., © Airbus Defence and Space GmbH, Copernicus/ESA |
| River flow and basin | HydroATLAS / RiverATLAS v1.0 (Linke et al. 2019) · CC BY 4.0 |
| Climate | NASA POWER, 1991–2020 |
| Viewpoints, trails, bridges and the river line | © OpenStreetMap contributors · ODbL |
| Images | EOX Sentinel-2 cloudless 2016 · CC BY 4.0; Wikimedia Commons |
| Rivers, waterfalls, mountains, lakes, beaches and islands nearby | Coastya, Lakeyas, Peakyas, Cascadyas, Islandyas, Riveryas |
Every figure is an average, an estimate or a count from a public dataset. Licences and methods: data sources.
The family
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