Frontiers in Karst Colloquium - A reactive transport framework for understanding geochemical transformations in karst systems. Karst Waters Institute, 17 November 2020, (virtual meeting), to register: https://uark.zoom.us/meeting/register/tZ0lde6rqz0tH9f8ZhhVE9VeWwXORDYDR_-k

Visual KARSYS Online Course, 2-3 December 2020, https://www.visualkarsys.com/ 

ALCADI 2020: International Symposium on History of Speleology and Karstology (ALps, CArpathians and DInarides), 5-8 December 2020 (Gorizia, Italy), contact: seppenhofer@libero.it

1st Karst Science Forum, postponed to 2021 (Bucharest, Romania), https://www.eris100.ro

International Course and Field Seminar: Characterization and Engineering of Karst Aquifers, postponed to 2021 (Žabljak-Durmitor Mt., Virpazar-Skadar Lake in Montenegro, and in Trebinje in Bosnia & Herzegovina), http://www.karst.edu.rs

7th International Course Characterization and Engineering of Karst Aquifers (CEKA), postponed to 2021 (Montenegro: Žabljak-Durmitor Mt., Virpazar-Skadar Lake, and Bosnia and Herzegovina: Trebinje), http://www.karst.edu.rs

14th International Symposium on Pseudokarst, 22-25 April 2021 (Świętokrzyskie [Holy Cross] Mountains, Poland), https://14pseudokarst.wonders4you.com/

US Geological Survey Karst Interest Group Meeting, May 2021 (Nashville, Tennessee, USA), https://www.usgs.gov/mission-areas/water-resources/science/karst-interest-group-kig-2020-workshop?qt-science_center_objects=0#qt-science_center_objects

Australian Cave and Karst Management Association Conference, 3-7 May 2021 (Wellington Caves, New South Wales, Australia), for more information: enquiries@wellingtoncaves.com.au

European Cave Rescue Association Meeting, postponed to late spring or November 2021 (Cantabria, Spain), https://caverescue.eu/ecra-meeting-2020-cantabria-spain/ 

36th Brazilian Congress of Speleology, 3-6 June 2021 (Brasilia, Brazil), http://36cbe.org.br/

2nd Columbian Congress of Speleology, 8-13 June 2021 (Hagia Sophia, Boyacá, Columbia), https://espeleocol.wordpress.com/iicce2021/

Karst Waters Institute Frontiers in Karst: Sulfuric Acid Weathering, postponed to mid-summer 2021 (San Vittore, Italy), https://karstwaters.org/conferences/sulfuric-acid-weathering/ 

28th International Karstological School “Classical Karst”: Regional Karstology - Local and General Aspects, 14-18 June 2021 (Postojna, Slovenia), https://iks.zrc-sazu.si/en/

EuroKarst 2021: The European Congress on Karst Hydrogeology and Carbonate Reservoirs, 22-24 June 2021 (Málaga, Spain), http://www.eurokarst.org/

18th International Congress of Speleology, 25 July – 1 August 2021 (Savoie Technolac, Le Bourget du Lac, Savoie, France), http://uis2021.speleos.fr/ 

Central Asian Speleological Forum, postponed to August 2021 (Tashkent, Uzbekistan), https://speleo.kg/en/news/first-circular-speleo-ca-forum-2020/

34th International Geographical Congress karst sessions: Global Karst Critical Zone and Land Use Planning in Karst, 16-20 August 2021 (Istanbul, Turkey), https://www.igc2020.org/en/KARST%20COMMISSION.html  

International Association of Hydrogeologists 47th Congress, 22-27 August 2021 (São Paulo, Brazil), https://iah2021brazil.org/en/

19th International Symposium on Vulcanospeleology, 28 August - 4 September 2021 (Catania, Italy), http://www.19isvetna.com/ 

International Association of Hydrogeologists 48th Congress, 6-10 September 2021 (Brussels, Belgium), https://iah2021belgium.org/

 Fort Stanton Cave Science Conference, September 2021 (Socorro, New Mexico, USA), https://geoinfo.nmt.edu/FtStanton/home.cfm

26th International Cave Bear Symposium, 30 September - 3 October 2021 (Reiss-Engelhorn-Museen, Mannheim, Germany), doris.doeppes@mannheim.de

6th EuroSpeleo Protection Symposium, 26-30 October 2021 (Isle of Vilm, Germany), contact symposium@eurospeleo.org

Speleo Kamaraton, 29 October – 1 November 2021 (Marina di Camerota, Salerno, Italy), http://www.speleokamaraton.eu/

23rd  National Cave and Karst Management Symposium, 1-5 November 2021 (San Marcos, Texas, USA), https://symposium2021.nckms.org/  

Karst Record IX (KR9) Conference, postponed to 2022 (Innsbruck, Austria), https://www.uibk.ac.at/congress/kr9/