| Balkan Speleological Union: Aiding cooperation amongst caving organisations within the Balkan countries. Articles, events, news, club information and contacts. |
| Czech Speleological Society: Founded in 1978. Dedicated to exploration and scientific research and features international conferences, workshops and expeditions. Includes contact information. [Czech and English]. |
| Groupe Spéléologique Luxembourgeois (G.S.L.): Member of UIS and FSCE. Offers trips to Müllerthal area. Includes photos and contact information. |
| Icelandic Speleological Society: Founded in 1989 for exploration, surveying, conservation and fellowship. Publishes irregular bulletins and newsletters. Includes photos and contacts. [Icelandic and English]. |
| Romanian Speleological Institute: Engaged in interdisciplinary speleological research in Romania. Includes institute history. |
| Romanian Speleology Karstology Society: Organisation aiming to explore and protect the Romanian karstic areas. Schedule, gallery and news. |
| Speleo Nederland: Includes magazine summaries, photos and contacts. [Dutch with some pages in English]. |
Classical
