Speleonaut, is the submersible used by the cave diver Jochen Hasenmayer, after the 1989 decompression accident that left his legs paralyzed, Hasenmayer designed the "Speleonaut" with his friend Konrad Gehringer in order to continue exploring the Blauhöhle cave system, which begins at the base of which spring that serves as the source of the river Blau in the karst landscape on the Swabian Jura's southern edge, in Southern Germany?
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Speleonaut Speleonaut (named from the Greek words for "cave" and "sailor") is the submersible used by the cave diver Jochen Hasenmayer. After the 1989 decompression accident that left his legs paralyzed, Hasenmayer designed the "Speleonaut" with his friend Konrad Gehringer in order to continue exploring the Blauhöhle cave system, which begins at the base of the Blautopf spring in the Swabian Jura mountain range. The "Speleonaut" is 72 cm wide and has nine engines, making it easy to maneuver in all directions. It is the first submarine designed specifically for the exploration of caves. According to Hasenmayer, the "Speleonaut" has been tested in Lake Constance to a depth of 105 m and has a design limit of 180 m .
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Blautopf The Blautopf (German for "Blue Pot"; "blau" means "blue", "Topf" means "pot") is a spring that serves as the source of the river Blau in the karst landscape on the Swabian Jura's southern edge, in Southern Germany.
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Lichtenstein Cave The Lichtenstein Cave is an 1972 discovered archaeological cave site near Dorste, Lower Saxony, Germany with a length of 115 m . The skeletal remains of 21 female humans and 19 males, dated to the Bronze Age, about 3,000 years ago were discovered. In addition, around 100 bronze objects (ear rings, bracelets, and finger rings) and ceramic parts from the Urnfield Culture were found.
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Passeier Valley The Passeier Valley (German: "Passeier" or "Passeiertal" ] ; Italian: "Passiria or Val Passiria" ] ) is the valley of the Passer river, in the mountains of South Tyrol, northern Italy. The Passer river is a left-bank tributary to the Adige. At the mouth of the valley, where the two rivers join, stands the town of Merano. From there, the valley runs north to the Timmelsjoch mountain pass, which leads to Sölden in the Ötztal valley of Austria and to the Jaufenpass which leads to Sterzing in the Wipptal.
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Jordanshöhe The Jordanshöhe is a mountain, roughly  sea level (NHN) ,<includeonly></includeonly> in the Harz in central Germany. It lies north of the town of Sankt Andreasberg in the district of Goslar in Lower Saxony. To the west is the Kuppe. On the mountain there is the Jordanshöhe youth hostel and the Jordanshöhe nature trail ("Gesteinskundlichen Lehrpfad Jordanshöhe").
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South German Jurassic The term South German Jurassic (German: "Süddeutscher Jura" ) in earth history is used to refer to a lithostratigraphic rock unit at the hierarchical level of a super group. The rocks of the South German Jurassic were mainly deposited during the Jurassic period about 199 to 146 million years ago. The boundaries of the South German Jurassic and those of the chronostratigraphic or international Jurassic are not, however, exactly coincident. The depositions began rather later than the date of the international Triassic/Jurassic boundary and end as a result of erosion of the uppermost strata at various times during the Upper Jurassic, i.e. well before the international Jurassic/Cretaceous boundary. The rock unit of the South German Jurassic is underlain by Keuper; in between is a small stratigraphic hiatus. Above the South German Jurassic the beds follow discordantly and with a large stratigraphic gap; in addition, Regensburg Green Sandstone occurs very locally, which is dated to the Cenomanian stage of the Cretaceous period. In its southern fringes the South German Jurassic dives under the Palaeogene Molasse depositions of the basement.
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Glanfurt The Glanfurt River is the outflow of the Wörthersee in Austria, also called "Sattnitz" by the Carinthian people. It starts at the lake's eastern bay, south of the peninsula Maria Loretto and runs more like a channel straight to the east. It passes Viktring Abbey, an old monastery which is now a suburb of Carinthia's capital Klagenfurt, and finally flows into the Glan River near the market town of Ebenthal. In summer it is the southern recreation area of Klagenfurt with a number of opportunities for free bathing and a bicycle track along the river.
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Hohle Fels The Hohle Fels (] ) (also Hohlefels, Hohler Fels, German for "hollow rock") is a cave in the Swabian Jura of Germany that has yielded a number of important archaeological finds dating to the Upper Paleolithic. Artifacts found in the cave represent some of the earliest examples of prehistoric art and musical instruments ever discovered. The cave is just outside the town of Schelklingen in the state of Baden-Württemberg, near Ulm. In 2017 the site became part of the UNESCO World Heritage Site "Caves and Ice Age Art in the Swabian Jura".
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Seerhein The Seerhein ("Lake Rhine") is a river about four kilometres long, in the basin of Lake Constance. It is the outflow of the Upper Lake Constance and the main tributary of the Lower Lake Constance. The water level of the lower lake is about 30 cm below the level of the Upper Lake. It is considered part of the Rhine, which flows into Lake Constance as the Alpine Rhine and flows out of the Lake as the High Rhine. The Seerhein arose after the last Ice Age (the Würm glaciation, about 9650 BCE). Some time after this period, the water level of Lake Constance gradually dropped by about ten metres and the shallow parts fell dry. Some parts of the Seerhein still have a character a bit like a lake.
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Red Main Spring The Red Main Spring (German: "Rotmainquelle" ) is the source of the Red Main river, the left-hand and southern headstream of the River Main in Germany. It is located in the Lindenhardt Forest, ten kilometres south of Bayreuth near Hörlasreuth at a height of  sea level (NN) . Although the Red Main is several kilometres longer than the Weiße Main, the stronger White Main Spring is seen as the source of the Main itself.
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Blauen (Badenweiler) The Blauen or Hochblauen is a 1,165 m mountain in the southern Black Forest. The peak lies within the municipalities of Schliengen and Malsburg-Marzell in Landkreis Lörrach and the community of Badenweiler in LandkreisBreisgau-Hochschwarzwald. It is an ideal viewpoint with views of the Black Forest, Vosges, Jura Mountains, and the Alps.
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Aachtopf The    is Germany's biggest karst spring, producing an average of 8,500 litres per second. Production varies seasonally and in response to the weather, but the spring never runs dry. The Aachtopf is a karst spring which is located south of the western end of the Swabian Jura, near the town Aach.
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Kornbühl Kornbühl is a mountain of Baden-Württemberg, Germany. It belongs to the Swabian Jura and is located in Zollernalbkreis near Burladingen. On its top the "Salmendinger Kapelle" is located.
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Wieda (river) The river Wieda in the German state of Lower Saxony has its source above the village of Wieda, flows through the village of Walkenried, the hamlet of Wiedigshof and the village of Gudersleben before discharging in the Harz river, the Zorge near Woffleben. Its channel regularly dries up in the summer months - it sinks into the karst soil and reappears in other places as springs. Its most important tributary is the Uffe.
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South Harz Karst Landscape Biosphere Reserve The South Harz Karst Landscape Biosphere Reserve (German: "Biosphärenreservat Karstlandschaft Südharz" ) is a biosphere reserve in the German state of Saxony-Anhalt. It was founded on 23 March 2009 and is thus the 16th biosphere reserve in Germany. Its recognition by UNESCO is pending.
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Schlüchtsee The Schlüchtsee is a little, artificial lake in the Southern Black Forest near Grafenhausen in the county of Waldshut in Germany, through which the River Schlücht flows.
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Unicorn Cave (Austria) The Unicorn Cave (German: "Einhornhöhle" ) in Austria is situated in the Hohe Wand Nature Park near Dreistetten in Lower Austria and may be reached on signposted hiking trails in ca. 20 minutes from Dreistetten aus (typical signpost illustrated). The cave was discovered in 1927 by Otto Langer senior and opened as a show cave in 1930. In 1964 the structures built by Otto Langer junior were modernised. Guided tours that take about 20 minutes are laid on from Easter to the end of September on Sundays and public holidays.
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Steinbrücken Cave Steinbrücken Cave (German: "Steinbrückenhöhle" , "Stone bridge cave", no. 1623/204 in the Austrian Caves Register) was discovered by the Cambridge University Caving Club on the Loser Plateau in 1999. It is named after a nearby natural arch. The arch is in fact a former entrance to Traungold Cave (1623/231e) which has been developed into a convenient bivouac shelter for cave explorers.
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Rhume The Rhume is a 48 km long river in Lower Saxony, Germany. It is a right tributary of the Leine. Its source is the karstic spring of Rhume Spring in Rhumspringe, south of the Harz mountain range. The water drains with high pressure from the ground of the funnel-shaped well, known for its turquoise colour.
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Heimkehle The Heimkehle is one of two great gypsum caves in Germany that are accessible as show caves. It lies on the southern edge of the Harz Mountains between Rottleberode and Uftrungen, east of Nordhausen, right on the state border between Thuringia and Saxony-Anhalt. The cave may be visited as part of a 45-minute-long guided tour.
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Lauter (Donau) Lauter (Donau) is a small river of the Swabian Alb, Baden-Württemberg, Germany. The German name is "Grosse Lauter". It's Karst spring is inside the walls of the former nunnery at "Offenhausen", a small settlement near Gomadingen. The river merges the Danube after 42 km. The river has a long geological history since late Miocene. Although the Swabian Alb is heavily karstfied, this river's water runs aboveground all the way.
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Fulde The Fulde belongs to the Weser river system in Germany. It is about 11 km long and flows entirely within the territory of the borough of Walsrode (Heidekreis district, in the state of Lower Saxony). It rises in a valley between two parallel end moraines formed in the Saalian Ice Age. By far the largest source drains the Grundloses Moor ("bottomless moor"), 4 kilometres north of Fulde and emerges from the "Kleiner See" ("Little Lake") there. Another source appears 2.5 kilometres northwest of the village of Fulde, which gave the stream its name. From there the Fulde runs through, at times, picturesque scenery between steep, grass-covered, clay banks and fish ponds south of the Walsrode town forest of "Eckernworth", where the Rischmannshof Heath Museum is located, crosses the centre of the town through the "Fulde Park" with its town hall and joins the River Böhme south of the monastery lake.