It is true that many ordinary people have instincted dream to be explorers .Someone would like to join some tourism project to the area out of the edge of civilizations, like the inner land of Africa , Snow mountains in Tibet or some caves few people knew . According to stories from media or environment protection NGO's reports, many tourism projects have caused problems on environmental issues everywhere. One of the most common topics is tourists left numerous trash over the mountains, even at the boot of Hi malaya snow mountain. Most of them are made of plastic which needs hundreds years to decay. Another issue is that the destruction or irrepairable influence on the local environment , especially in some Caves, which are sensitive to light.The third problem is species invasion . Most of them happened o n Island. W hile some visitors arrive on the island, they could bring some ants from home which destroyed the whole ...