Benchmark for Sea Level Rise

Date: July 1, 1841 • Location: Tasman Peninsula, Australia

Thomas Lempriere and James Clark Ross carved a sandstone marker on Tasmania's Isle of the Dead, one of the oldest benchmarks for measuring sea level rise.

Thomas James Lempriere was a British colonial administrator in the Australian colony of Van Diemen's Land. He is known for his diaries depicting the convict period in Van Diemen's Land, his work as a portrait and landscape painter, and his work as a pioneering naturalist.