Liu Ko-hsiang served in the navy, and has done ecological survey work in the islets around Pengchia Island. Looked at from the ocean, he says, the volcanic mountains of the Tatun group appear to be perfectly rounded and smooth, presenting a markedly different picture from the craggy peaks of southern Taiwan.
當過海軍、曾在彭佳嶼附近諸島進行生態考察的劉克襄則指出，從海面遠眺，大屯山山脈呈現了火山群的渾圓和婉約，跟南部山巒粗獷的自然景觀截然不同。