Advanced beings spend a great deal of their time mining because the technology they depend on to keep them alive and “other dimensional” requires a great deal of raw minerals mined from the earth.
With respect to your concern about the Alien calling earth a “prison planet”… nothing could be further from the truth….
What divides spectrums of perception (or dimensions) is not time, but pressure. In order to travel to another dimension, one must be pressurized from the inside as well….
Question posed by website visitor: When you talk about advanced beings or aliens… “Living underground” in some of your articles, do you mean literally “live underground” and what is the purpose of those that do so? Answer provided…
These advanced being-aliens are not from the future. Time travel for them and all beings, for that matter, is impossible regardless of the technology that they possess. Even God cannot time travel!