re: #153 MsJ

That lava is moving pretty fast (for lava). I am kinda surprised.

It’s a feature of the hot spot magma/lava that formed the islands. It’s generally very fluid, which is why you get large, broad shield like mountains instead of cones. This changes somewhat as the volcano gets shifted off the hot spot. The flows get a bit less fluid, so the character of the mountain changes a bit and you start to get a bit steeper slopes. Mauna Loa vs Mauna Kea sort of exemplifies this.

Mauna Kea

Mauna Loa