Jishan is actually two islets, which are connected by stepping stones that can be traversed at low tide. Little Jishan is enclosed in rows of closely packed hexagonal basalt columns that form a high sea cliff. This makes it a haven for birds, and thus a great place for bird watching. Big Jishan is known for its well-developed basalt column landscapes, which are different from those on other islands in that different kinds of stone are found among them.