Sima Humboldt and Sima Martel
314 and 248 meters deep, ancient quartzite sinkholes located on the top of forested table-top mountains and containing patches of isolated, primeval rainforest on their bottoms.
Dashiwei tiankeng
One of the largest sinkholes of the world – up to 613 metres deep, 600×420 m across.
Xiaozhai tiankeng
Largest sinkhole (tiankeng) in the world, up to 662 meters deep, 625×535 meters across.
Black Hole of Andros
300 m wide and up to 47 m deep round water filled sinkhole with a layer of violet jelly layer of bacteria at 18 meters depth. Microorganisms have heated up the water to 40°C.
El Zacaton sinkhole
The second deepest water-filled sinkhole in the world. The total depth of the sinkhole is 339 m, the lake is 319 m deep. On the surface of the lake, there are floating several round travertine islands. Lake is formed by volcanically heated acidic groundwater.
Poza Seca, Sistema Zacaton
One of the unique travertine capped sinkholes in Sistema Zacatón: formerly open sinkhole has sealed itself with a limestone lid. Most likely it hides unknown life forms, not investigated.
Ecosystems
Wondermondo 🢖 Categories of wonders 🢖 Biological wonders 🢖 Ecosystems Category Ecosystems Described ecosystems What is included in this category? Definitions of words ecosystem and biotope are somewhat ethereal and elusive. Biotope is rather small area with uniform environmental conditions and specific community of life. For years there is ongoing identification and classification of biotopes and their aggregations with hundreds of […]
Poza Garapata, Sistema Zacaton
One of the sinkholes of the unique Sistema Zacaton. Possibly hides a waterbody under a travertine lid.
Sistema Zacaton
Unique karst field created by thermal acidic waters heated by volcanic heat. Contains the world’s deepest water-filled sinkhole, the 339 meters deep El Zacatón sinkhole with 319 meters deep lake, and floating islands. Poza Seca is one of the unique travertine capped sinkholes of Sistema Zacatón – here the formerly open sinkhole has sealed itself with a limestone lid. Most likely it hides unknown life forms, not investigated.
Top 10 locations of California poppy meadows
Wondermondo 🢖 Lists and articles 🢖 Top 10 locations of California poppy meadows Publication Top 10 locations of California poppy meadows In short California poppy (Eschscholzia californica Cham.) grows in the western part of Northern America from Oregon in the north to Baja California in the south. Even a single orange (often – yellow) flower of this plant emits […]
