Picture an ancient river delta, where layers of sediment—sand, silt, and gravel—were deposited over countless years. This material, carried by powerful rivers from distant highlands, gradually accumulated and compressed, eventually solidifying into the vibrant red sedimentary rock we see today. Bluff Head, which is the oldest rock region in Hong Kong with 400 million years history, is one of the best example showcase the raw beauty of Hong Kong's natural landscape formed by the ancient river delta.

Port Island is a geological marvel that vividly showcases Hong Kong's ancient past. Its striking red conglomerate and sandstone formations, formed during the Cretaceous period approximately 140 million years ago, tell the story of a semi-desert climate that once dominated the region. These vibrant rocks, rich in iron oxide, owe their fiery hue to oxidation processes under arid conditions. Port island’s Sea Danxia landforms, shaped by millions of years of erosion and weathering, create a dramatic landscape that glows under sunlight, contrasting beautifully with the surrounding blue waters.

Red Rock Gate (Hung Shek Mun)is a striking geological feature located along the scenic coastline of Hong Kong, known for its vibrant red sandstone formations. These formations date back approximately 100 million years and are part of the larger Plover Cove Country Park. The vivid coloration of the rocks is due to the oxidation of iron minerals, creating a stunning visual contrast against the azure waters. This captivating landmark showcases unique sedimentary rock layers shaped by centuries of erosion and natural forces, making it a popular spot for photography and exploration. As part of the Hong Kong UNESCO Global Geopark, Red Rock Gate offers breathtaking views and insights into the region's rich geological history.

Ap Chau, also known as Duck Island, is a captivating geological and cultural gem located in the northeastern New Territories of Hong Kong. This small island is renowned for its striking red-brown breccia formations, which date back to the Cretaceous period, approximately 100 million years ago. The distinctive coloration of the rocks is due to the oxidation of iron minerals, creating a stunning visual contrast against the surrounding waters. Ap Chau is part of the Hong Kong UNESCO Global Geopark, showcasing unique sedimentary rock layers shaped by centuries of erosion and natural forces.