Dear friends from Czech Republic, UIS Member Country,

With best wishes for an excellent year 2023, we are glad to share with you
Volume 64-2 of the UIS Bulletin.
Please, send it to the whole speleological community in your country and
your entire contact list.

The PDF Interactive format can be downloaded by clicking on the link:
http://uis-speleo.org/wp-content/uploads/2022/12/uisb642.pdf 

The 108 pages of this issue bring the following topics:

● Editorial: The motto that builds the UIS  
● President’s Column - by Nadja Zupan Hajna: “History, Present, and Vision”
● UIS President’s Report to the General Secretary - by George Veni 
● The Report of the UIS General Secretary - by Fadi Nader 
● UIS Treasurer’s Report to the General Assembly - by Nadja Zupan Hajna 
● The closing of the International Year of Caves and Karst 2021/22 
● The first years of the UIS - by Arrigo Cigna 
● The new UIS Bureau 2022-2025
● The UIS Archive in Postojna, Slovenia 
● Report of Commission on Artificial Cavities 
● Report of Commission on Bibliography 
● Report of Commission on Cave Rescue 
● Report of Commission on History of Speleology 
● Report of Commission on Informatics 
● Report of Commission on Karst and Caves Protection 
● Report of Commission on Physical Chemistry and Hydrogeology of Karst 
● Report of Commission on Pseudokarst 
● Report of Commission on Volcanic Caves 
● The second Cave Animal of the Year: BATS 
● The UIS Prizes 2021/22 Awarding Ceremony
● The UIS France Habe Prize 2022 winner 
● The Cave Time Capsule begins its journey through time in Savoie, France 
● Mini S4 - Summer School Workshop on Speleothem Science in Austria 
● The UIS and its global recognition 
● UIS at the United Nations Groundwater Summit 
● 19th International Congress of Speleology 2025 in Brazil - updated news 
● The ICSs and the pre- and post-congress excursions 
● Minutes of the UIS Annual Bureau Meeting in France 
● Minutes of the UIS General Assembly in France 
● Minutes of the UIS Bureau Virtual Meeting 
● In memorian - Pindi Setiawan (Indonesia) 
● In memorian - Yavor Shopov (Bulgaria) 
● Calendar of Events 
● UIS Bureau 2022/2025 
● List of UIS Commissions and Working Groups 
● List of Member Countries 
● Annual Contributions and Bank Account 

We welcome your comments and suggestions to improve upcoming issues.

The complete collection (78 issues) is available by clicking on the link:
http://uis-speleo.org/index.php/uis-bulletin-bi-annual-newsletter-2/

Visit the Websites:
Union Internationale de Spéléologie - www.uis-speleo.org
<http://www.uis-speleo.org> 
International Year of Caves and Karst 2021 - http://iyck2021.org/
19th International Congress of Speleology - https://speleo2025.org/   

Best regards

Nivaldo COLZATO (Brazil)
Vice President of Operations / UIS Bulletin Editor
UIS-Union Internationale de Spéléologie
nivaldo@karinaetiquetas.com.br