A startup is exploring building underground tunnels through the Earth's mantle to connect distant locations faster and cheaper than undersea cables, using advanced materials like insulated tungsten and monel alloy tubes that could withstand the heat and pressure. While maintenance costs would be lower, political approval may be difficult to obtain, so initial applications could be for defense projects.

1. Can You Dig a Hole to China?
Stealth Start Up said to be looking at Faster and Cheaper
Alternative to Global Interconnect With Deep Earth
Insulated Tungsten Monel Alloy Tube Connections Through
Earths Mantel
• Advanced Materials Technology and Drilling Techniques Expected to Make
this Potentially Possible
• Ultimately Cost to maintain would be 5% of Trans Oceanic Connections
• Biggest Hurdles will likely be political – so first applications likely to be
defense related