1) 3rd International Planetary Caves Conference, 18-21 February 2020 (San Antonio, Texas, USA), https://www.hou.usra.edu/
2) International Congress: 80th Anniversary of the Cuban Speleological Society, 19-23 February 2020 (Caibarién, Villa Clara, Cuba), for information contact congreso80aniv.sec@gmail.com
3) Workshop on Surveying Caves with the Disto X, 28 February 2020 (Viñales, Cuba), for information contact boligan@gmail.com or anthroscr@gmail.com
4) 16th Multidisciplinary Conference on the Engineering and Environmental Impacts of Karst, 20-24 April 2020 (San Juan, Puerto Rico), www.sinkholeconference.com
5) ALCADI 2020: International Symposium on History of Speleology and Karstology (ALps, CArpathians and DInarides), 30 April – 3 May 2020 (Gorizia, Italy), contact: seppenhofer@libero.it