The Grotta Gigante is an enormous cave, first opened to the public in 1908, large enough to contain the entire basilica of Saint Peter. Because of its special characteristics and constant temperature of 12°C, it is the site of scientific experiments of world interest. The oldest speleological society in Europe runs the caves and organizes guided tours all year round. A series of routes, some of which have only been opened recently, allow visitors to admire the cave (illuminated by spotlights) from different angles. You can also visit the small museum of archeological and paleontological materials from the area. Check website for timings and details.
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“Problems of breathing”
Hello. We have just been in Grotta Gigante in Trieste last week. The best part was to the low temperature. It was 39 C outside that day. Only 1...
Great attraction
I really liked the facts and history of the cave, its huge, amazing, breath taking. People in our group came from all over to see this cave, th...
A nice change from Venice
The Grotta Gigante, combined with the wonderful ride on the Tram di Opicina (plus bus #42) was a great way to see a unique Italian sight withou...
Wonderful trip
This cave is so enormous, that you have to take 500 steps to get down to the bottom. Of course, then at the end of the tour, you have to climb...
An awesome cave!
It's definately worth seeing. It's one of the largest known caves in the world. I didn't want to leave when the tour was over.
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