In the past decade or so, Lin Tsung-sheng has been to a primeval mountain forest that even the Yangmingshan National Park Headquarters has yet to check out. He has followed upstream more than 140 major and tributary waterways in the Tatun mountain area and discovered that "the national park that gets five million visitors a year is really just the surface." Tatun has many startling secrets hidden under its dense bamboo tree cover.
十多年來，林宗聖走過連陽明山國家公園管理處都不曾去過的原始闊葉林地區，他以溯溪方式深入大屯山區一百四十多條主支流，發現「每年五百萬遊客看到的國家公園都只是表面」，大屯山在芒草箭竹森林的覆蓋下，有許多令人驚喜的原始洞天。