... I used to take the train past some volcanic plugs each morning. One plug was close to the train and almost vertical on one long side.
One morning as I was going past I saw out of the corner of my eye a very wide rectangular portal in the long side of the plug with a pillar exactly in the middle, presumably to prevent collapse
I immediately thought that there was an etheric portal into the empty lava channels common in volcanic formations. Since there are many ufo sightings in the area, I thought it might be used by etheric craft
Another plug also has such an entrance. I have had a couple of friends test it using the ends of their eye beams