[1] It contains Halemaʻumaʻu, an active pit crater near the caldera's southwestern edge.

Much of the caldera floor is covered by lava flows erupted since the 19th century.

[3] The Kīlauea Caldera and neighboring Kīlauea Iki are circled by Crater Rim Drive, an 11 mi (18 km) long paved road that provides access to Hawaiʻi Volcanoes National Park.

[4][5] The Hawaiian Volcano Observatory was established on the rim of the Kīlauea Caldera in 1912.

[6] Outside of Halemaʻumaʻu, eruptions from the Kīlauea Caldera have taken place in 1982, 1975, 1974, 1971, 1921, 1919, 1918, and possibly in 1820 and 1790.