Third mountain tunnel breakthrough on Mumbai–Ahmedabad bullet train
Next story · 2 JunMission “Senehjori” to brand Assam’s Muga silk
UPSC has already asked about this. Read the story with these questions in mind.
The third mountain tunnel of the Mumbai–Ahmedabad bullet train in Maharashtra, MT-07, broke through at Ambesari village in Dahanu taluka, Palghar, on 2 June 2026. It is 417 metres long and 14.4 metres wide, wide enough for both tracks. It follows MT-05 in January and MT-06 in February 2026.
- Date
- 2 Jun 2026, Ministry of Railways
- Tunnel
- MT-07, Ambesari, Dahanu taluka, Palghar
- Size
- 417 m long, 14.4 m wide (both tracks)
- Method
- controlled drilling and blasting from both ends
- Earlier
- MT-05 (1.5 km) 2 Jan 2026; MT-06 (454 m) 3 Feb 2026
- Total mountain tunnels
- eight: seven in Palghar, one in Valsad (done)
The bullet train mountain tunnel MT-07: what happened?
India’s first high-speed rail line has to cut through hills near the Maharashtra–Gujarat border. Mountain tunnels are among the slowest parts of the job, so each breakthrough is a progress marker.
- Monitoring used surface settlement points, 3D targets, strain gauges and seismographs.
- MT-08 (350 m) had broken through on 5 October 2023; MT-03 is over 80% excavated and MT-04 nearly 60%.
- All three mountain tunnels between Vapi and Boisar stations are now excavated.
Where do the eight mountain tunnels stand?
| Tunnel | Status |
|---|---|
| MT-05 (1.5 km) | broke through 2 Jan 2026 |
| MT-06 (454 m, NATM) | broke through 3 Feb 2026 |
| MT-07 (417 m) | broke through 2 Jun 2026 |
| MT-08 (350 m) | broke through 5 Oct 2023 |
| MT-03 | over 80% excavated |
| MT-04 | nearly 60% done |
| MT-01, MT-02 | in progress |
| Valsad tunnel (Gujarat) | completed |
Why does the bullet train mountain tunnel MT-07 matter?
- Infrastructure: Progress on India’s first bullet train corridor.
- Technology: Advanced tunnelling and monitoring skills built at home.
What can Prelims ask on the bullet train mountain tunnel MT-07?
- MT-07: 417 m long, 14.4 m wide; Palghar district.
- Eight mountain tunnels in total; seven in Palghar, one in Valsad.
- MT-06 used NATM.
How to use this in Mains
- As per PIB (2026-06-02): mountain tunnel MT-07 (417 m long, 14.4 m wide) broke through in Palghar district, the third in five months on the Mumbai–Ahmedabad High Speed Rail.
- Track progress on India's first high-speed rail line.
Quotable data pointMountain tunnel MT-07 (417 m long, 14.4 m wide) broke through in Palghar district, the third in five months on the Mumbai–Ahmedabad High Speed Rail.
PIB: Railways: bullet train tunnel, 2 Jun 2026
Exam angle
Prelims: MAHSR facts.
Practice MCQs
Original practice questions (not PYQs).
Most mountain tunnels of the Mumbai–Ahmedabad bullet train lie in which district?
Answer (b) & explanation
PIB (Railways), 2 Jun 2026: seven of eight are in Palghar.
Questions students ask about this
Where is mountain tunnel MT-07?
At Ambesari village, Dahanu taluka, Palghar district, Maharashtra.
How many mountain tunnels does the bullet train project have?
Eight: seven in Palghar (Maharashtra) and one in Valsad (Gujarat).
Which tunnelling method was used for MT-06?
The New Austrian Tunnelling Method (NATM).
Keep studying
Go deeper
Official source: PIB: Railways: bullet train tunnel, 2 Jun 2026
facts from cited sources only; faculty review pending