According to psychological theory: you have deep memories in your subconscious. That road to the underground may be your memory when you were born as a human being. So please ignore it.
According to metaphysics, the road you often dream about may be the memory of the so-called "past life", or it may lead to a place that no one wants to go, and you have the experience of going in and out from there. So, please take the road of practice.
Usually basking in the sun, listening to cross talk and other programs that can make you feel happy, can make the whole body yang rise.
Eating more positive foods that tonify liver and kidney, that is, eating more alkaline foods, will help Yang Qi to rise.
Try not to keep things in your heart, try to look at the problem from another angle and try to open up a little.
Your dream will never appear again.