Komatsu Hard Rock Mining Tunnel Boring Machine.
image copyright Komatsu. Used in relation to press release https://www.komatsu.jp/en/newsroom/2022/20220708
HS2 TBM launch at Long Itchington Wood Tunnel - HS2 media release at https://mediacentre.hs2.org.uk/news/hs2-celebrates-launch-of-tbm-for-second-tunnel-bore-under-long-itchington-wood-in-warks