探索世界最深的洞穴1?

The lecturer talks about the how technology change the exploring process to the underground world. Scientists need to go down thousands meter in team has 20 to 30 members, working 2 to 4 months, bearing darkness, moisture environments. They are competence, tolearant, disciplined people with strength and technics to climb up and down. In the 30day of trip, they will find a place called termino-, a place where you find natural light and water.

After 1999, gadget to unknown creature, like digital wall mappers are created by engineers from NASA to explore the space. They plan to expire the europa ocean on the moon, and the crust is so deep that the digital wall mapper spend one hour on the way to the ice crust. The digital wall mapper has 1960 sensors, take more than tons of TNT, and have a solid core by its own. It has a 3D slam for localization to going backward and forward.

https://www.bilibili.com/video/BV1ub411i7b5?share_source=copy_web