xAI MACROHARDRR Data Center Utilidor - GIS Tunnel Map

David T Phung • davidtphung@nlt143.energy • Tunnel Vision Challenge 2026
TUNNEL VISION CHALLENGE
TENNESSEEMISSISSIPPIStateline RoadTulane RoadStanton RoadRailroad (Active)Colossus 25400 Tulane RdWhitehaven, Memphis TN350,000 GPUsASTARTMACROHARDRR2400 Stateline RdSouthaven, MSGB300 Processors | $20B InvestmentBENDPower PlantSouthaven CC780 MWColossus 13231 Riverport Rd(~3 mi NW)State Line Crossing~35.0042° N~1 Mile(5,280 ft)Tunnel Corridor BufferN~0.5 mile35.0345°N, -90.0235°W34.9955°N, -90.0180°WxAI MACROHARDRR UTILIDOR - TUNNEL ALIGNMENTGIS Reference Map | David T Phung | Feb 2026David T Phung • davidtphung@nlt143.energy

Map Legend

Proposed Tunnel Alignment
Colossus 2 (Start Point)
MACROHARDRR (End Point)
TN/MS State Boundary
Southaven Power Plant (780 MW)
Major Roads
Active Railroad
State Line Crossing Point

Point A - Colossus 2 (Start)

5400 Tulane Road, Whitehaven, Memphis, TN

35.0345° N, -90.0235° W

Owner: CTC Properties / xAI
350,000 GPUs, Tesla Megapack backup

Point B - MACROHARDRR (End)

2400 Stateline Road, Southaven, MS

34.9955° N, -90.0180° W

Owner: MZX Tech LLC / xAI
GB300 Processors, $20B investment, 810K sq ft

Southaven Combined Cycle Plant

Stanton Road, Southaven, MS

Adjacent to MACROHARDRR

780 MW natural gas generation
Primary power source for both facilities

Tunnel Specifications

Length: ~5,280 ft (1 mile)
Inner diameter: 12 ft
Depth: 30-50 ft below grade

Uses: Power, fiber, cooling, transport

Tunnel Cross-Section (12-ft Inner Diameter)

Ground SurfaceDepth: 30-50 ftPOWER & FIBER ZONE480V BusFiber Optic13.8kVCW-SCW-RChilled Water (24" & 18")Electric Vehicle Track (4 ft)WalkwayV12 ft IDUpper ZonePower DistributionFiber Optic CablesMid ZoneChilled Water Supply (24")Chilled Water Return (18")Lower ZoneElectric Vehicle TrackPersonnel & EquipmentPrecast Segment Lining (15" thick)