From Dornburg the SaaleHorizontale continues past the Burgschädel spur down to Neuengönna and then back up Plattenberg hill, offering panoramic views of Alter Gleisberg and across the Gleistal valley.
From here the trail snakes through dense, leafy forest and colourful meadows up Weidenberg hill before dropping down into the Rautal valley. Following the babbling Steinbach stream, the trail leads up Windknollen hill, the site of a battle between Napoleonic and Prussian troops in 1806. The Napoleon Stone marks the start of the descent into the Mühltal valley via the Landgrafen restaurant.
Distance: 21.6km Uphill: 453m Downhill: 533m
Access: Dornburg train station, bus no. 420, 422
Departure: Tram no. 5 or 35 / Ernst-Abbe-Platz stop, Jena-West and Jena Paradies train stations (1km from the trail)
Places to eat: Dornburg, Porstendorf, Zwätzen, Landgrafen Jena
Day section 4 can be further broken down into short routes 14 to 17.