Bigar Waterfall, Nature Reserve, Romania Bigăr is one of the most unusual waterfalls in the world and one of the most beautiful in Romania. According to The World Geography, there are a number of facts that place her as number one on the list of eight unique waterfalls around the world due to the way the water spreads and falls in tiny shreds of water.
Chocolate Hills, Philippines - More than 1,770 perfectly cone-shaped hills can be found in the Central Visayas region of the Philippines, more exactly in Bohol. The unusual geological formation has baffled geologists for decades. There are different theories on how the hills formed. Over an area of 50 square kilometers, the amazing hills are Philippines’s 3rd National Geological Monument together with Hundred Islands National Park and Taal Volcano, the world’s smallest active volcano.
As a result of the mining, Río Tinto is notable for being very acidic (pH 2) and its deep reddish hue is due to iron dissolved in the water. Acid mine drainage from the mines leads to severe environmental problems due to the heavy metal concentrations in the river