The first natural formation visitors would see in Pulau Ubin would be the “Rhino rock”. This nondescript rock owes its name to its resemblance to the shape of a rhinoceros. But a keen geologist would tell you more. The vertical furrows you see are shaped by rainwater, an ongoing process over thousands of years.
Joseph Lai in his beautiful post “The Lion of Tor” liken it to a mane of a lion, shaped by Mother nature’s tears. I am inclined to agree with Joseph’s interpretation. It certainly look like a stone lion, something Sang Nila Utama could have seen and gave the name “Singapura”.