Pozzo del Merro is a flooded sinkhole in the countryside northeast of Rome, Italy. Situated at the bottom of an 80 m conical pit, at 392 m (1,286 ft) it is the second deepest underwater vertical cave in the world. In 2000 two ROVs were sent to explore its depths; the first, the "Mercurio (Mercury)" reached its maximum operative depth of 210 m (690 ft) without reaching the bottom. The second ROV, "Hyball 300", reached 310 m (1,020 ft) without touching down either. A third dive in 2002 with the more advanced "Prometeo" robot reached the bottom at 392 m (1,286 ft), but discovered a narrow passage continuing horizontally.
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| - Pozzo del Merro (cs)
- Pozzo del Merro (in)
- Pozzo del Merro (it)
- Pozzo del Merro (en)
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| - Pozzo del Merro (v překladu z italštiny Studna Merro, přičemž merro je již málo používaný regionální výraz pro propast) je zatopená propast v regionu Lazio ve střední Itálii. Nachází se na katastru městečka na území metropolitního města Říma (dříve Římská provincie), zhruba dvě desítky kilometrů směrem na severovýchod od historického centra italského hlavního města. (cs)
- Pozzo del Merro adalah sebuah lubang runtuhan yang berisi air di pedesaan timur laut Roma, Italia. Gua ini berada di dasar tebing kerucut berdiameter 80–m, dengan kedalaman 392 m (1.286 ft). Gua ini adalah gua vertikal bawah air terdalam kedua di dunia (setelah Hranická Propast). Pada tahun 2000 dua ROV dikirim untuk menjelajahi kedalamannya; yang pertama, "Mercurio (Mercury)" mencapai kedalaman jelajah maksimum 210 m (690 ft) tanpa bisa mencapai dasar. ROV kedua, "Hyball 300", mencapai kedalaman 310 m (1.020 ft) tanpa mencapai dasar. Penyelaman ketiga pada tahun 2002 dengan robot "Prometeo" yang lebih canggih mencapai dasar pada kedalaman 392 m (1.286 ft), tetapi menemukan lorong sempit yang terus berlanjut secara horizontal. (in)
- Il Pozzo del Merro è una dolina carsica situata nelle campagne a nord di Roma, tra i Monti Cornicolani in Macchia del Barco e Macchia di Gattaceca, nel comune di Sant'Angelo Romano. Secondo i primi studi dell'Università di Tor Vergata, non si conosce la profondità della cavità, ma solo il limite massimo a cui le misurazioni sono giunte, ovvero 392 metri. Dalla sua scoperta, infatti, le sonde calate non hanno toccato il fondo e gli studi proseguono. (it)
- Pozzo del Merro is a flooded sinkhole in the countryside northeast of Rome, Italy. Situated at the bottom of an 80 m conical pit, at 392 m (1,286 ft) it is the second deepest underwater vertical cave in the world. In 2000 two ROVs were sent to explore its depths; the first, the "Mercurio (Mercury)" reached its maximum operative depth of 210 m (690 ft) without reaching the bottom. The second ROV, "Hyball 300", reached 310 m (1,020 ft) without touching down either. A third dive in 2002 with the more advanced "Prometeo" robot reached the bottom at 392 m (1,286 ft), but discovered a narrow passage continuing horizontally. (en)
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| - Pozzo del Merro (v překladu z italštiny Studna Merro, přičemž merro je již málo používaný regionální výraz pro propast) je zatopená propast v regionu Lazio ve střední Itálii. Nachází se na katastru městečka na území metropolitního města Říma (dříve Římská provincie), zhruba dvě desítky kilometrů směrem na severovýchod od historického centra italského hlavního města. (cs)
- Pozzo del Merro is a flooded sinkhole in the countryside northeast of Rome, Italy. Situated at the bottom of an 80 m conical pit, at 392 m (1,286 ft) it is the second deepest underwater vertical cave in the world. In 2000 two ROVs were sent to explore its depths; the first, the "Mercurio (Mercury)" reached its maximum operative depth of 210 m (690 ft) without reaching the bottom. The second ROV, "Hyball 300", reached 310 m (1,020 ft) without touching down either. A third dive in 2002 with the more advanced "Prometeo" robot reached the bottom at 392 m (1,286 ft), but discovered a narrow passage continuing horizontally. The sinkhole, similar to the Zacatón cenote, was formed by volcanic activity eroding the carbonate rock. (en)
- Pozzo del Merro adalah sebuah lubang runtuhan yang berisi air di pedesaan timur laut Roma, Italia. Gua ini berada di dasar tebing kerucut berdiameter 80–m, dengan kedalaman 392 m (1.286 ft). Gua ini adalah gua vertikal bawah air terdalam kedua di dunia (setelah Hranická Propast). Pada tahun 2000 dua ROV dikirim untuk menjelajahi kedalamannya; yang pertama, "Mercurio (Mercury)" mencapai kedalaman jelajah maksimum 210 m (690 ft) tanpa bisa mencapai dasar. ROV kedua, "Hyball 300", mencapai kedalaman 310 m (1.020 ft) tanpa mencapai dasar. Penyelaman ketiga pada tahun 2002 dengan robot "Prometeo" yang lebih canggih mencapai dasar pada kedalaman 392 m (1.286 ft), tetapi menemukan lorong sempit yang terus berlanjut secara horizontal. (in)
- Il Pozzo del Merro è una dolina carsica situata nelle campagne a nord di Roma, tra i Monti Cornicolani in Macchia del Barco e Macchia di Gattaceca, nel comune di Sant'Angelo Romano. Secondo i primi studi dell'Università di Tor Vergata, non si conosce la profondità della cavità, ma solo il limite massimo a cui le misurazioni sono giunte, ovvero 392 metri. Dalla sua scoperta, infatti, le sonde calate non hanno toccato il fondo e gli studi proseguono. (it)
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