Underland: a deep time journey

First chamber

Descending

Seeing (Britain)

Second chamber

Hiding (Europe)

Third chamber

Haunting (The north).

First chamber ; Descending

Seeing (Britain). Burial (Mendips, Somerset) ; Dark matter (Boulby, Yorkshire)

The understorey (Epping Forest, London)

Second chamber

Hiding (Europe). Invisible cities (Paris)

Starless rivers (The Carso, Italy)

Hollow land (Slovenian highlands)

Third chamber

Haunting (The north). Red dancers (Lofotens, Norway)

The edge (Andøya, Norway)

The blue of time (Kulusuk, Greenland)

Meltwater (Knud Rasmussen Glacier, Greenland)

The hiding place (Olkiluoto, Finland)

Surfacing.