07-29-2016, 01:17 PM
Haha. Yeah most of the structures on Mauna Loa are pretty basic in case the lava flows again. They built a large barrier to redirect it back in 1986. The longest leg is 670 m long. You can see the observatories and the barrier trench in this 2012 field trip notes:
http://hilo.hawaii.edu/~kenhon/HawaiiCha...hapman.pdf
http://hilo.hawaii.edu/~kenhon/HawaiiCha...hapman.pdf