Si la plupart des cavités souterraines concernées par la spéléologie se trouvent dans des karsts, il existe des « cavités pseudokarstiques » dans des formations non carbonatées : gypses, laves, grès, conglomérats,..
Le tableau ci-dessous répertorie les cavités de plus de 100 mètres de profondeur ou de 400 mètres de développement, reconnus, qui s'ouvrent dans le gypse, l'anhydrite ou la halite, et plus généralement dans les évaporites.
La valeur « 0 » (zéro) signifie que la dimension (développement ou dénivelée) n'est pas connue.
Liste des plus longues cavités du gypse ou de l'anhydrite Cette première liste recense les principales cavités naturelles souterraines de plus de 500 mètres de développement, creusées dans le gypse, l'anhydrite ou la halite. {| border="0" style="border:1px solid #999; background-color:#FFFFFF" class="wikitable sortable" |+ Tableau 1 : Liste des plus longues cavités naturelles dans les évaporites |- bgcolor="#CCCCCC" !Réf. !Nom de la cavité(autre nom) !Pays /État !Division /Subdivision(s) !Développ.(m) !Dénivelée (m) !Source / Référence !Date source |- !align="center" | 1 |align="left" | Grotte Optimiste (Optimisticeskaja) |align="left" | |align="left" | Oblast de Ternopil,Raïon de Borchtchiv !align="right" | m |align="right" | m |align="left" | IC n° 25 & M.Tranteev - Bulgarian Group for discoveries in the Optymistiychna cave |align="center" | 2009-01 |- !align="center" | 2 |align="left" | Ozernaja |align="left" | |align="left" | Oblast de Ternopil,Raïon de Borchtchiv !align="right" | m |align="right" | m |align="left" | Sergey Yepifanov via Peter Lenahan |align="center" | 2003-08 |- !align="center" | 3 |align="left" | Zolushka(, Cendrillon)Grotte Émile Racovitsa |align="left" | |align="left" | Raïon de Briceni / Cernivci,Nowoselyzja !align="right" | m |align="right" | m |align="left" | RISC 1996 |align="center" | 1996-?? |- !align="center" | 4 |align="left" | Grotte de Mlynky (Ml'inki) |align="left" | |align="left" | Oblast de Ternopil,Raïon de Tchortkiv !align="right" | m |align="right" | m |align="left" | RISC 1996 |align="center" | 1996-?? |- !align="center" | 5 |align="left" | grotte de cristal (Kristal'naja) |align="left" | |align="left" | Oblast de Ternopil,Raïon de Borchtchiv !align="right" | m |align="right" | m |align="left" | Atlas des Grandes Cavités Mondiales |align="center" | 1986-?? |- !align="center" | 6 |align="left" | Sistema Kulogorskaya-Troya |align="left" | |align="left" | Oblast d'Arkhangelsk,Pinega !align="right" | m |align="right" | m |align="left" | Karst and cave Pinega's - Victor Malkov, Evgeny Gurkalo |align="center" | 2005-06 |- !align="center" | 7 |align="left" | Spipola-Aquafredda |align="left" | |align="left" | Regione d'Émilie-Romagne,Provincia de Bologne,Comune de San Lazzaro di Savena !align="right" | m !align="right" | m |align="left" | Alexander Klimchouk Longest Gypsum caves of the world |align="center" | 2005-06 |- !align="center" | 8 |align="left" | Jester Cave System |align="left" | |align="left" | County de Greer !align="right" | m |align="right" | m |align="left" | Sue Bozeman |align="center" | 1988-03 |- !align="center" | 9 |align="left" | Sistema Olimpiyskaya-Lomonosovskaya |align="left" | |align="left" | Oblast d'Arkhangelsk,Pinega !align="right" | m |align="right" | m |align="left" | Karst and cave Pinega's - Victor Malkov, Evgeny Gurkalo |align="center" | 2005-06 |- !align="center" | 10 |align="left" | Slavka |align="left" | |align="left" | Oblast de Ternopil,Raïon de Borchtchiv !align="right" | m |align="right" | m |align="left" | Alexander Klimchouk - Longest Gypsum caves of the world |align="center" | 1996-?? |- !align="center" | 11 |align="left" | Sistema de la Cueva del Agua www.aradelas.com : Espeleo Club Aradelas, Campamento Social de Semana Santa, Karst en yesos de Sorbas - Almería 7 al 12 de abril 2009 aguas.igme.es : El sistema kárstico en yesos de la cueva del agua (Sorbas, Almería), José María Calaforra y Francisco Sánchez-Martos, Karst en Andalucía. J. J. Durán y J. López Martínez (Eds.), . Instituto Tecnológico Geominero de España, 1998, Madrid(plus de 22 entrées dont : tramo S0-21, tramo S0-28, Sistema V3-V4, Sistema Abejas, Sima de la Lavadora, etc.) |align="left" | |align="left" | Comunidad d'Andalousie,Provincia d'Almería,Municipio de Sorbas !align="right" | m |align="right" | m |align="left" | Jose Luis Membrado |align="center" | 2007-04 |- !align="center" | 12 |align="left" | Verteba |align="left" | |align="left" | Oblast de Ternopil,Raïon de Borchtchiv !align="right" | m |align="right" | m |align="left" | Alexander Klimchouk - Longest Gypsum caves of the world |align="center" | 1996-?? |- !align="center" | 13 |align="left" | Cater Magara |align="left" | |align="left" | ? !align="right" | m |align="right" | m |align="left" | www.akkh.de |align="center" | 2007-02 |- !align="center" | 14 |align="left" | Sistema Kumichevka-Vizborovskaya |align="left" | |align="left" | Oblast d'Arkhangelsk,Pinega !align="right" | m |align="right" | m |align="left" | Karst and cave Pinega's - Victor Malkov, Evgeny Gurkalo, Aleksandr Kabanihin |align="center" | 2005-06 |- !align="center" | 15 |align="left" | Parks' Ranch Cave |align="left" | |align="left" | County de Eddy !align="right" | m |align="right" | m |align="left" | Dave Belski |align="center" | 2003-03 |- !align="center" | 16 |align="left" | Konstitutionaya |align="left" | |align="left" | Oblast d'Arkhangelsk,Pinega !align="right" | m |align="right" | m |align="left" | Karst and cave Pinega's - Victor Malkov, Evgeny Gurkalo |align="center" | 2005-06 |- !align="center" | 17 |align="left" | Kungurskaja |align="left" | |align="left" | Kraï de Perm,District de Kungur !align="right" | m |align="right" | m |align="left" | Igor Lavrov Peshchtry - Interuniversity collection of Scienceific Trans. |align="center" | 2005-01 |- !align="center" | 18 |align="left" | J. Selman Cave System |align="left" | |align="left" | County de Woodward !align="right" | m |align="right" | m |align="left" | NSS News V60 N7 P204 |align="center" | 2002-07 |- !align="center" | 19 |align="left" | Severniy Siphon |align="left" | |align="left" | Oblast d'Arkhangelsk,Pinega !align="right" | m |align="right" | m |align="left" | Vlad Eremeev, Evgeny Gurkalo' |align="center" | 2005-06 |- !align="center" | 20 |align="left" | Ordinskaya Cave[noyée] |align="left" | |align="left" | Kraï de Perm,District d'Orda !align="right" | m |align="right" | m |align="left" | Ulyana Zhakova|align="center" | 2010-03 |- !align="center" | 21 |align="left" | Zolotoy Kluchik |align="left" | |align="left" | Oblast d'Arkhangelsk,Pinega !align="right" | m |align="right" | m |align="left" | Victor Malkov, Evgeny Gurkalo|align="center" | 2005-06 |- !align="center" | 22 |align="left" | Sistema Covadura(Cueva de los Cuñados 5) |align="left" | |align="left" | Comunidad d'Andalousie,Provincia d'Almería,Municipio de Sorbas !align="right" | m !align="right" | m |align="left" | Reinhard Elsensohn|align="center" | 2007-02 |- !align="center" | 23 |align="left" | Sima de las Yeserasou Cueva de Pedro Fernándezou Cueva de Estremera |align="left" | |align="left" | Comunidad de Madrid,Municipio d'Estremera !align="right" | m |align="right" | m |align="left" | Jose Luis Membrado|align="center" | 2007-04 |- !align="center" | 24 |align="left" | Crystal Caverns |align="left" | |align="left" | County de De Baca !align="right" | m !align="right" | m |align="left" | Dave Belski|align="center" | 2003-03 |- !align="center" | 25 |align="left" | Double Barrel Shotgun Cave |align="left" | |align="left" | County de Lincoln !align="right" | m |align="right" | m |align="left" | Dave Belski|align="center" | 2003-03 |- !align="center" | 26 |align="left" | Umm al Masabih |align="left" | |align="left" | ex-Muhafazah de Tripolitaine,Shabiyah de Az Zawiyah, ex-Yafran,Bi'r al Ghanam !align="right" | m |align="right" | m |align="left" | Alexander Klimchouk Longest Gypsum caves of the world|align="center" | 1996-?? |- !align="center" | 27 |align="left" | Scrooge Cave |align="left" | |align="left" | County de Lincoln !align="right" | m |align="right" | m |align="left" | Dave Belski|align="center" | 2003-03 |- !align="center" | 28 |align="left" | Simfoniya |align="left" | |align="left" | Oblast d'Arkhangelsk,Pinega !align="right" | m |align="right" | m |align="left" | Karst and cave Pinega's - Victor Malkov, Evgeny Gurkalo|align="center" | 2005-06 |- !align="center" | 29 |align="left" | Bol'shaya Pehorovskaya |align="left" | |align="left" | Oblast d'Arkhangelsk,Pinega !align="right" | m |align="right" | m |align="left" | Victor Malkov, Evgeny Gurkalo|align="center" | 2005-06 |- !align="center" | 30 |align="left" | Carcass Cave |align="left" | |align="left" | County de De Baca !align="right" | m !align="right" | m |align="left" | Dave Belski|align="center" | 2003-03 |- !align="center" | 31 |align="left" | Martin Cave System |align="left" | |align="left" | County de Chaves !align="right" | m |align="right" | m |align="left" | Dave Belski|align="center" | 2003-03 |- !align="center" | 32 |align="left" | Abisso Antonio-Lusa |align="left" | |align="left" | Regione d'Émilie-Romagne,Provincia de Ravenne,Comune de Riolo Terme !align="right" | m !align="right" | m |align="left" | Reinhard Elsensohn|align="center" | 2007-02 |- !align="center" | 33 |align="left" | Leningradskaya |align="left" | |align="left" | Oblast d'Arkhangelsk,Pinega !align="right" | m |align="right" | m |align="left" | Victor Malkov, Evgeny Gurkalo|align="center" | 2005-06 |- !align="center" | 34 |align="left" | Wimmelburger Schlotte |align="left" | |align="left" | Land de Saxe-Anhalt,Landkreis de Mansfeld, !align="right" | m |align="right" | m |align="left" | Prof. Dr. Stephan Kempe|align="center" | 2005-01 |- !align="center" | 35 |align="left" | Horseshoe Vally Cave |align="left" | |align="left" | County de Greer !align="right" | m |align="right" | m |align="left" | NSS News|align="center" | 1995-08 |- !align="center" | 36 |align="left" | Pshashe-Setenay |align="left" | |align="left" | Kraï de Krasnodar,Grand Caucase,Vallée de la Laba !align="right" | m |align="right" | m |align="left" | Andrey Ostapenko, Victor Kovalenko - KGSS group|align="center" | 2007-11 |- !align="center" | 37 |align="left" | Alexandra Tereschenko |align="left" | |align="left" | Oblast d'Arkhangelsk,Pinega !align="right" | m |align="right" | m |align="left" | Victor Malkov, Evgeny Gurkalo|align="center" | 2005-06 |- !align="center" | 38 |align="left" | Vodnaya |align="left" | |align="left" | Oblast d'Arkhangelsk,Pinega !align="right" | m |align="right" | m |align="left" | Victor Malkov, Evgeny Gurkalo|align="center" | 2005-06 |- !align="center" | 39 |align="left" | Jansill/Driftwood Cave System |align="left" | |align="left" | County de Chaves !align="right" | m |align="right" | m |align="left" | Dave Belski|align="center" | 2003-03 |- !align="center" | 40 |align="left" | River Styx Cave books.google.fr : Springs of Texas, Volume 1 Par Gunnar Brune,Helen C. Besse, 2002, p.271 |align="left" | |align="left" | County de King !align="right" | m |align="right" | m |align="left" | Texas Speleological Survey via Jerry Atkinson|align="center" | 2010-01 |- !align="center" | 41 |align="left" | Fanning Ranch North & South Cave |align="left" | |align="left" | County de ? !align="right" | m |align="right" | m |align="left" | Dave Belski|align="center" | 2003-03 |- !align="center" | 42 |align="left" | Jubileynaya |align="left" | |align="left" | Oblast d'Arkhangelsk,Pinega !align="right" | m |align="right" | m |align="left" | Victor Malkov, Evgeny Gurkalo|align="center" | 2005-06 |- !align="center" | 43 |align="left" | Atlantida |align="left" | |align="left" | Oblast de ?Raïon de ? !align="right" | m |align="right" | m