I haven't been to the cave where you were but I believe I have been to one of the underground cities.
I was in a dream but it was one of those that are really real and are more like memories. I and my husband were archaeologists (we are not in reality)
and we entered a cave that led to tunnels, we got lost. We ran out of water and it was really hot down there.
Then we were found and I regained consciousness in a type of cottage hospital on a high bed.
The lady was holding a hand held scanner (like Star Trek) and was scanning me. When she got to my left shoulder area her demeanor changed and I sensed
she was concerned. I asked what was wrong but she answered vaguely, something about I was fine the lack of water and heat hadn't harmed me.
I looked around and I saw a German Shepherd dog come in and then sniff me and go out again. I asked where my husband was and was told he was in better
shape than I was and he was out exploring.
I asked if I could look around. I went outside the 'house' and noticed it was a painted exterior wall which was peeling in some areas. I thought it
seems to be quite old. Next to the house was a field of wheat blowing in a cool wind.
I looked up and I could see the roof of the cave but it was very high; 100s of feet tall.
I then woke up and wrote it down.
A few years later I found out about the hollow earth theory; but it's more like a pomegranate bubble; one at the North pole and one at the South
pole. Admiral Byrd has visited both.(Google him.)
The Earth can not be hollow, where would the crystal go?
Since then I have found a report that suggests that there are over 300 underground cities all over the Earth-the Mayans, the Greeks.
www.bibliotecapleyades.net...
Once you realize how the earth is constantly producing energy that we can use safely and without pollution, underground living becomes possible, even
preferable.
I used to astral project as a kid and I hadn't done it for a long time but I believe I had astrally journeyed there in this dream.
A few days later my body broke down with adrenal exhaustion, I think the lady knew.
(I know people will say my mind was telling me how ill I really was but I am pretty sure I astrally projected.)
Peace