---
title: "Altenau No. 3 Dammgraben"
url: "https://www.harzinfo.de/en/tour/altenau-no-3-dammgraben-1"
language: "en"
type: "SportsActivityLocation"
image: "https://img.oastatic.com/img2/63840445/max/variant.jpg"
breadcrumb: "Root > Harzinfo > Experiences > Tour"
---

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Altenau No. 3 Dammgraben
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- 10.36 km long
- Round trip
- Difficulty: difficult
- Condition: difficult
- Walking / hiking

- 2:30 h
- 10.36 km
- 157 m
- 157 m
- 456 m
- 610 m
- 154 m
- 
- Start: KRISTALL Sauna Spa "Heißer Brocken", Karl-Reinecke-Weg 35, 38707 Altenau (515 m)
- Destination: KRISTALL Sauna Spa "Heißer Brocken", Karl-Reinecke-Weg 35, 38707 Altenau (515 m)

The Dammgraben is with 25 km the longest artificially constructed ditch. Its water once powered the mines in Altenau and Clausthal.

Harz: Magische Gebirgswelt

Good to know
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Pavements

Trail (14%)

Street (5%)

Asphalt (61%)

Path (9%)

Gravel (10%)

Unknown (1%)

Best to visit

suitable

Depends on weather

- Jan
- Feb
- Mar
- Apr
- May
- Jun
- Jul
- Aug
- Sep
- Oct
- Nov
- Dec

Directions

The long circular route with slight, moderate, and steep ascents has a total elevation gain of about 290 meters and is the most varied.

The fairly sunny route through the town is stimulating; in the meadow area the route is temporarily quite intense before it eases in the shelter of the forest. There are rarely heat stresses and frequently cold stimuli in winter.

The demands due to the route are high, the demands due to the climate are moderate. At a body weight of 75 kg, the average calorie consumption is about 610 kcal.

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Additional information

Tourist Information Altenau
Hüttenstraße 9
38707 Altenau
Tel. 05328 8020
www.oberharz.de

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Author´s Tip / Recommendation of the author

Healing climate hiking appointments with a climate therapist as well as further information about healing climate and accommodation are available at the Altenau Tourist Information and at www.oberharz.de.

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Nearby
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- Event
    
    
    - Christmas
- Place of interest
    
    
    - Sauna landscape
    
    
    
    
    
    
    
    
    
    
    
    
    - Brewery
    
    
    
    
    
    
    
    
    
    
    
    
    - Traditional craftsmanship
- Tours
    
    3.38 km
    
    
    - Walking / hiking
    
    
    
    
    
    
    
    
    
    
    
    6.08 km
    
    
    - Walking / hiking
    
    
    
    
    
    
    
    
    
    
    
    13.44 km
    
    
    - Walking / hiking

**outdooractive**

Contact

Clausthal-Zellerfeld

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