Ma Shi Chau Nature Trail is located in the Ma Shi Chau Special Area, fairly close to Yim Tin Tsai. Formed as a result of the deposition of fine particles that gradually turn into sandspits, a tombolo emerges when the tide is below 1.5 metres, connecting Sam Mun Tsai, Tai Po with Ma Shi Chau through Yim Tin Tsai, leading to the entrance of Ma Shi Chau Nature Trail. Further ahead are siltstone in marbled patterns, as well as the combined landforms of mudstone and siltstone. With the rocks formed over 280 million years ago, there are also other geological wonders, including alternate red sedimentary rocks and celadon green tuff. Not only are these natural wonders breathtaking, they are also intriguing to look at, as some of them are strange-looking.