Give a stream of consciousness and then the final answer. The most recent recorded volcanic eruption was between 1820 and 1854, but many eyewitnesses reported eruptive activity in 1858, 1870, 1879, 1882 and 1894 as well.

Based on this passage, when is the last time mount rainier erupted?
The relevant sentence in the passage is: The most recent recorded volcanic eruption was between 1820 and 1854, but many eyewitnesses reported eruptive activity in 1858, 1870, 1879, 1882 and 1894 as well.
So, the final answer is between 1820 and 1854.