How to pronounce “lassen” in English

So it's 10 images from Lassen Volcanic National Park.

This is the summit of Mount Lassen.

So the example that I'll give you is from Lassen Volcanic National Park.

I can find there the beautiful landscape of the Sierra but, at the same time, Lassen has a vast array of geological features.

It's a little volcanic outbreak on Mount Lassen.

from our home in Berkeley, California to Northern California to the Allen Telescope Array up near Mount Lassen.