The greatest recorded eruptions occurred between 1730 and 1736. The volcanic activity continues as the surface temperature in the core ranges from 100 to 600 °C (212 to 1,112 °F) at the depth of 13 metres (43 ft), which is demonstrated by pouring water into the ground, resulting in a geyser of steam which is an attraction for tourists. There is only one active volcano, Timanfaya volcano which the park is named after.
In 1993, UNESCO designated a Biosphere reserve covering the whole of Lanzarote. The national park is one of the core areas of the biosphere reserve.
Access to the park by the public is strictly regulated to protect the delicate flora and fauna. There are one or two footpaths, and a popular short route where one can visit by camel. There is a public car park from which one can tour the volcanic landscape by coach using a road that is otherwise closed to the public.