(03) Looking south along the South Heath cutting towards the tunnel portal – Aug. 2016 (08_96)

(84) Tunnel Portal looking north – May 2019 (08_106)

(18) The Weights & Measures Gym (formerly the Black Horse) on Frith Hill – Sep. 2021 (08_14)

(99) Looking south towards the Chiltern tunnel north portal headwall – Jun. 2023 (08_114)

(98) Assembling the reinforcing bars for the porous portal bases – Jun. 2023 (08_115)

(97) Looking south along the South Heath cutting towards the Chiltern tunnel north portal – Jun. 2023 (08_116)

(96) Looking north towards the porous portals and South Heath cutting – Jun. 2023 (08_117)

(95) Looking east past the portal eastern flank wall towards PRoW GMI 13 entrance into Jenkin’s Wood – Jun. 2023 (08_114)

(94) Looking north towards the South Heath cutting from the portal west flank wall – Jun. 2023 (08_118)

Emma

(162) Looking north into the basement – Jun. 2023 (06_207)

(161) Installation of water proof membrane below the base slab and behind the lining wall – Jun. 2023 (06_208)