70-year-old daredevil Ivan Trifonov recently flew his hot air balloon down into the Earth and inside Croatia’s Mamet Cave. While it’s not actually the first time that someone has flown a balloon in a cave, it’s still an impressive feat.
Using found materials from the streets of Sao Paulo, Brazil, artist Henrique Oliveira creates amazing installation pieces. Some are like caves of wonder we would love to explore. (Thanks Trina!)
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