Mystic Cave

Benagil caves, Lagoa, Algarve, Portugal

source:

>>https://static1.squarespace.com/static/564177d6e4b083e275d816fd/5a2eff314192022b9fc7141d/5a27d0f88165f5ccfe67bc39/1518008765702/DSC00960.jpg?format=2500w

>>https://i0.wp.com/www.cityoftheweek.net/wp-content/uploads/2017/04/how-to-visit-benagil-cave-portugal-11.jpg?fit=1200%2C900&ssl=1

>>https://www.flickr.com/photos/96657819@N07/10657387665

Goats Hair Caves on Gibraltar

source: https://commons.wikimedia.org/wiki/File:Goats_Hair_Caves_on_Gibraltar_and_sunlight.jpg

Melissani Cave,Greece

source:https://lamagiadicefalonia.com/wp-content/uploads/2017/03/lago_melissani.jpg

Melissani Cave

Exploring the Melissani Cave on the Greek island of Kefalonia by boat

source: http://www.dronestagr.am/wp-content/uploads/2017/11/DJI_0085-Edit-2-Edit-1200x800.jpg

Melissani Cave

source: http://mybestplace.com/aroundtheworld/wp-content/uploads/2016/06/Melissani-Cave-Kefalonia-Greece-IMG-2-TESTO.jpg

Marble Caves, Chile

source:

https://cdn-image.travelandleisure.com/sites/default/files/styles/1600x1000/public/1489690155/marble-caves-chile-01-MARBLE0317.jpg?itok=3bmwEAhu

Marbles Cave, Chile

source: https://i2.wp.com/www.valexus.ch/wp-content/uploads/2015/01/IMG_4932.png?ssl=1

Naica Mine in Chihuahua, Mexico

Caves of giant crystals inside the Naica Mine in Chihuahua, Mexico.

source: https://l43.cdn-news30.it/blobs/variants/2/9/4/5/29453e94-35c5-406c-bf7f-a83c140a9cab_large.jpg?_636151827000549812

The Cave of Crystal Giants

980 ft (300 m) beneath the surface of Naica, Chihuahua, Mexico is a mine filled with giant gypsum crystals. Known locally as Cueva de los Cristales (Cave of the Crystals), the gypsum crystal cave is 98 ft (27 m in length) and connected to a larger, working mine best known for its selenite crystals.

source: https://twistedsifter.com/2015/11/cave-of-crystal-giants-naica-mexico/

nettlebed cave

Crystal formations in a pool.
source:http://www.geologyin.com/2016/12/inside-nettlebed-cave-crystals-in-pool.html

Nettlebed Cave

Nettlebed Cave is a limestone cave located in the Mount Arthur region of the northwest South Island of New Zealand.

source: http://www.geologyin.com/2016/12/inside-nettlebed-cave-crystals-in-pool.html

The secondary room at the back of Nettlebed Cave.

source:flickr

Gunung Mulu, Sarawak, Malaysia

Sharp, needle-like rock formations made of limestone rise high above the trees. These rocks make up the Pinnacles, a fascinating.

source: https://www.thousandwonders.net/Gunung+Mulu+National+Park

Gunung Mulu, Sarawak, Malaysia

source: https://www.bikeandtours.com/application/files/7215/2264/3741/Mulu_National_Park.jpg

Gunung Mulu, Sarawak, Malaysia

source: https://www.atlantisrejser.dk/elsa/img/Countries/71/shutterstock449911846.jpg

Gunung Mulu, Sarawak, Malaysia.

source:https://a.travel-assets.com/findyours-php/viewfinder/images/res40/53000/53496-Gunung-Mulu-National-Park.jpg

Silabur Cave, Sarawak

source: https://scontent-iad3-1.cdninstagram.com/vp/bf72a4469b3c64b319085ac88e8c01b5/5CE55E27/t51.2885-15/e35/36826673_1828523183850400_2846326302242242560_n.jpg?_nc_ht=scontent-iad3-1.cdninstagram.com