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Long field trips



  Price (per person) Date(s)
  Times/Duration Approximate route (may be subject to change)
  Accommodation / Food



A6 Plio-Pleistocene Phreatomagmatic Volcanism in a Fluvio-Lacustrine Basin in Western Hungary

The registration is closed. In case of interest please contact the IUGG Prague Secretariat

Phreatomagmatic volcanism in the Mio-Pleistocene western Pannonian Basin. The participants will visit exposed diatremes, near vent pyroclastic successions of maars and tuff rings commonly filled with scoria and spatter cons and form buttes in a fluvio-lacrustine basin. We will explore the volcanic faces associated with small-volume, monogenetic volcanoes and will have the opportunity to explore the variety of volcanic successions. The trip also provides insight to understand geoconservation, geo-heritage and geopark management as the majority of the trip will take place in the Bakony-Balaton Global Geopark territory. 

522,- EUR per person (currently not available)
Sunday, June 21 - Thursday, June 25
5 days
departure 8:30
arrival 19:00
Day 1, Day 2, Day 3, Day 4, Day 5
4x accommodation, 5x lunch, 4x dinner

C4 The Phonolitic Laacher See Volcano and the Quaternary East Eifel Volcanic Field

The registration is closed. In case of interest please contact the IUGG Prague Secretariat.

Intra-plate alkaline volcanism in the Eifel comprises basanites, nephelinites and leucitites as parent magmas to large volumes (> 20 km3 DRE) of highly evolved explosive phonolitic magmas. The tephra deposits of the Laacher See volcano (13 ka) are spectacularly exposed in various facies and document plinian, phreato-plinian and phreatomagmatic eruption and transport processes. Juvenile phonolite and abundant cognate cumulate rocks document process and timing of magmatic evolution, compositional zonation, and magma mixing. The complex architecture of scoria cones with intercalated strombolian and Maar-deposits from nested craters can be reconstructed in time and three dimensions. In the famous "Mendig cellars“, we will see intermediate tephrite lava flows that were quarried underground for millstones since medieval times. Finally, the crater of the Laacher See shows active degassing in Mofettes and is the location of one of the finest Roman abbeys in Central Europe (Maria Laach) East Eifel, but visits to the classical Maar-volcanoes in the West Eifel are also planned.

There will be a stop at the Frankfurt airport on July 7 on the way to Prague for those who want to take advantage of this connection

411,- EUR per person
Friday, July 3 - Tuesday, July 7
5 days

departure 8:00
arrival 19:00
Approximate route
4x accommodation, 3x lunch

C6 Miocene Submarine to Subaerial Volcaniclastic Deposits and Exhumed Volcanic Landforms Along the Danube Bend in North Hungary

The registration is closed. In case of interest please contact the IUGG Prague Secretariat.

The trip will lead to the Danube Bend and its broader vicinity where a great variety of volcanic debris-avalanche, debris-flow, and volcaniclastic mass-flow deposits (subaqueous to subaerial) form ring plain successions along multiple, medium-volume andesitic to dacitic volcanic centers of Miocene age. The trip will provide a great opportunity to experience the preservation potential of million-year-old volcanic landforms, various volcanic facies relationships, and the interplay between volcanism, young tectonic movements and related erosion, which the spectacular exhumed volcanic region offers. The trip will also visit  the newly opened Visitor Center of Kemenes Volcano Park in West Hungary, and all nights will be spent in the fascinating downtown of Budapest providing enough time to enjoy the Hungarian capital.

479,- EUR per person
Thursday, July 2 - Sunday, July 5
4 days
departure 9:00
arrival 20:00
Day 1, Day 2, Day 3, Day 4
3x accommodation, 4x lunch, 3x dinner

C7 Variscan Plutonism of the Bohemian Massif (Joint Trip IAVCEI and Eurogranites)

The registration is closed. In case of interest please contact the IUGG Prague Secretariat.

The Bohemian Massif is a large relict of the crystalline basement at the eastern extremity of the Variscan orogen in Europe. During the field trip, we shall see a uniquely preserved sequence of magmatic and metamorphic rocks ranging from Late Devonian/Early Carboniferous subduction-related magmatism to Variscan continental collision and metamorphic climax and Serpukhovian large-scale crustal anatexis.  One day will be dedicated to HP granulites from the orogen’s root and their relation to the ultrapotassic plutons. Also, the rich cultural heritage of southern–central Bohemia will not be neglected. Starting in Prague, a medieval gem of Central Europe, we visit the historical towns of Český Krumlov and Telč.

More information about the trip available on the external website -

620,- EUR per person
Friday, July 3 - Wednesday, July 8
6 days
departure 8:00
arrival 19:00
Day 0, Day 1, Day 2, Day 3, Day 4, Day 5
5x accommodation (shared double rooms), 3x lunch, 2x lunch box, 5x dinner

C8 The Land of Devastating Ignimbrite Deposits, Inviting Wine Cellars and the Fabulous Fairy Chimneys (Bükkalja - Tokaj Mts., Northern Hungary)

The registration is closed. In case of interest please contact the IUGG Prague Secretariat

The Miocene to Quaternary volcanism of the Carpathian-Pannonian region started with a silicic ignimbrite flare-up associating with eruption of large volume silicic magmas. This volcanic activity coincided with the initial thinning of the continental crust and lithosphere beneath the area. Although most of the silicic volcanic products are covered by younger sediments due to the post-rift subsidence, the Bükk foreland region offers a unique opportunity to have an insight into the nature of ignimbrites. The field trip will show key-outcrops of unwelded to welded ignimbrites, crystal-poor and crystal-rich pyroclastic products and thus, offers an excellent opportunity to discuss the variety of chemical and stratigraphic methods how such ignimbrite sheets can be used for stratigraphic purposes and how our current understanding of the formation of such extensive ignimbrites may form including the magma chamber processes with particular emphasis of magma mixing and magma mingling. Apart from the localities having volcanological and petrologic importance, unique and mysterious erosional forms of the ignimbrites, called as fairy chimney or as the local people denoted them „beehive stones“ will be also visited as well as the wine cellars carved into the ignimbrites. The field trip then will take the participants from to the Tokaj Mountains where subaqueous to subaerial small-to-medium volume silicic effusive products can be excellently studied with fine petrologic features.
705,- EUR per person (currently not available)
Thursday, July 2 - Monday, July 6
5 days
departure 9:00
arrival 20:00
Day 2 > Egerszalók - Eger - Szomolya - Tibolddaróc - Egerszalók
Day 3 > Egerszalók - Bogács - Cserépfalu - Egerszalók
Day 4 > Egerszalók - Vizsoly - Telkibánya - Pálháza - Tokaj - Bodrogkisfalud - Egerszalók
Day 5 > trip back to Prague
4x accommodation, 4x breakfast, 4x dinner, 4x lunch box

C9 Excursion to Glaciological Field Sites in the Ötztal Alps, Austria

The registration is closed. In case of interest please contact the IUGG Prague Secretariat

The glaciers in the excursion region are among the cradles of Alpine glaciology and are, uninterruptedly, subjects of leading glaciological research. The excursion will stop at the Vernagtferner gauging station, central for glacio-hydrological studies, and will provide interesting views (e.g. see image) and information on glacier mass balance, glacio-meteorological, glacio-morphological and glacier-climate research and results along the route. It will be led by expert members of both the Munich and the Innsbruck group.
The excursion will start from Vent (Ötztal, Austria), will end in Kurzras (Italy), and you will visit the research sites on Vernagtferner (Bavarian Academy of Science) and Hintereisferner and Hochjochferner (University of Innsbruck). A post-excursion visit to the South Tyrolean Museum of Archeology in Bolzano/Bozen can be arranged on request.

WARNING: This is a walking field trip in the high altitude with difficult mountain terrain. A perfect health condition and appropriate equipment is mandatory!

Notes: No return trip to Prague. End of the field trip is in Bolzen/Bolzano (Italy), see the description for details. Min 6, max. 15 people


750,- EUR per person (currently not available)

Thursday, July 2 - Tuesday, July 7
6 days


Day 1: transfer from Prague to Vent. Overnight stay: Hotel in Vent (1900 masl)
Day 2: Vent - Stablein (chairlift; 2350 masl; EUR 9) – Breslauer Hütte (2855 masl) - Vernagthütte (2773 masl) (full day walk). Overnight: Vernagthütte
Day 3: visiting Vernagtbach research station (Bavarian Academy of Science) and Vernagtferner terminus (several surges and related lake damming during Little Ice Age). Walk (appr. 2 - 3h) to Hochjochhospiz (2417 masl). Overnight: Hochjochhospiz
Day 4: Hintereisferner tongue (appr. 2500 mals, depending on snow conditions) and back to Hochjochhospiz; 2nd night.
Day 5: Hochjochferner and Schöne Aussicht mountain hut (2850 masl). Overnight.
Day 6: Schöne Aussicht mountain hut - Kurzras (2020) [appr. 2 h walk]; transfer to Bozen/Bolzano [appr. EUR 30]; (possibility to see the archeological Iceman museum); train connections to Innsbruck/Munich and Verona/Venice/Milan.

5x Accommodation, 6x lunch, 5x dinner

A7 Chaine des Puys and Limagne Rift

The registration is closed. In case of interest please contact the IUGG Prague Secretariat

The Chaine des Puys and Limagne fault form a close geological ensemble on the west side of the Limagne graben, part of the Western European Rift. This assemblage was implicitly judged to have Outstanding Universal Value by UNESCO in June 2014, and and will potentially be added to the World Heritage list in 2015. The area sparked controversy in the 19th Century, with debates over uniformitarianism/catastrophism, neptunism/plutonism and craters of elevation. It was one of the first rifts to be described and the area is a focus of present day tectono-volcanic research. The Limagne fault is an exhumed rift fault, and a reactivated Hercynian structure with spectacular inverted relief. The fault - parallel Chaîne des Puys stands on Hercynian orogenic rocks and the >80 monogenetic volcanoes contain the full range of monogenetic types, ranging from simple scoria cones, tuff rings and maars, to domes, and intrusive topography.
The field trip will explore all aspects of this geological scale model, as well as the regional context, the World Heritage Project and the international links to other rifts and volcanic fields. The programme covers the Limagne Fault structure, sedimentology and morphology, the complexity of the Chaîne des Puys volcanism, the interrelationships between the volcanism and the fault, geoheritage and education issues in the context of the rich Auvergne landscape and culture environment.
In addition to the field geology, visits will be made to the Laboratoire Magmas et Volcans of Blaise Pascal University, The Auvergne Regional Council UNESCO project, the geoscience park Vulcania, the Lemptégy open air volcano, a volcanic winery, and the tuff ring catacombs of Clermont-Ferrand. The trip will be linked to and followed up with a Geoheritage session at the IUGG conference and preceded by a session at EGU in April. The cost of the trip is being held as low as possible to allow the broadest participation of the public as possible. French Massive Central comprises several volcanic areas. Late Pleistocene to Holocene monogenetic volcanism can be visited in Chaîne des Puys. Large volcanic complexes of Cantal and Mont Dore experienced periods of decaying generating spectacular debris avalanches.

Accommodation type A = 659,- EUR (currently not available)
Accommodation type B = 449,- EUR (currently not available)
Accommodation type C = 419,- EUR (currently not available)
Monday, June 15 - Monday, June 22
8 days
departure 8:30
arrival 19:00
7x accommodation, 6x lunch, 3x dinner







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