Are some UFOs from Inside the Earth?

https://www.vice.com/en/article/anomalies-deep-inside-earth-are-wreckage-of-crashed-alien-world-scientists-propose

Top Secret Alien Bases | Ancient Aliens https://www.youtube.com/watch?v=KAmj6Zy_KL4

https://www.popularmechanics.com/science/a35969153/theia-remants-alien-world-inside-earth-mantle/

 https://www.goodreads.com/book/show/713121.Secret_of_the_Ages

https://globalnews.ca/news/10562778/ufo-uap-on-earth-harvard-study/