Vog been getting to you lately? It’s not stopping the U.S. Geological Survey (USGS) from celebrating 100 years of studying Hawaii volcanos. 

“Volcanic activity and its associated earthquakes are responsible for Hawaii’s fertile soil, rainfall, isolated habitat for unique species, breathtaking natural beauty, but also, unfortunately, its geologic hazards,” said USGS director Marcia McNutt in a statement on Tuesday.

USGS is planning a slew of activities for the Hawaiian Volcano Observatory‘s centennial, with a goal of helping Hawaii residents continue to understand “how to live safely in the vicinity of such powerful geologic forces.”

One date to mark on your calendar: Jan. 21, when admission fees to Volcanoes National Park will be waived.

In case you’re counting, Kilauea has erupted 48 times on the observatory’s watch (including the latest eruption, ongoing for more than 29 years as of this month). Mauna Loa has erupted one dozen times in 100 years, most recently in 1984.

Here’s a shot of Kilauea from Tuesday, courtesy of the USGS live cam: