Dirigida por | |||
| Stephen Judson | (como Steve Judson) | ||
Créditos del guión(en orden alfabético) | ||
| Jack Stephens | guionista | |
| Steve Atteberry | ... | Himself (caver) | |
| Nancy Holler Aulenbach | ... | Ella Misma / Narrador | |
| Hazel Barton | ... | Ella Misma | |
| Gordon Brown | ... | Él Mismo | |
| Marty Brown | ... | Himself (caver) | |
| Mark Clippinger | ... | Himself (caver) | |
| Scott Davis | ... | Himself (caver) | |
| Scott Dawson Ph.D. | ... | Himself (U.C. Berkeley) | |
| Jose R. De La Torre Ph.D. | ... | Himself (U.C. Berkeley) | |
| Sam Drevo | ... | Él Mismo | |
| Jorge Gonzalez | ... | Él Mismo | |
| Steffen Heim Ph.D. | ... | Himself (U.C. Berkeley) | |
| Kevin Higgins | ... | Himself (caver) | |
| Rebecca Holden | ... | Herself (caver) | |
| Janot Lamberton | ... | Ella Misma | |
| Mael Lamberton | ... | Él Mismo | |
| Rebecca Middleton | ... | Herself (U.C. Berkeley) | |
| Luc Moreau | ... | Él Mismo | |
| Liam Neeson | ... | Él Mismo / Narrador (voz) | |
| Rueben Novelo | ... | Él Mismo | |
| Carolyn Rasmussen | ... | Herself (U.C. Berkeley) | |
| George Stowe-Raines | ... | Himself (caver) | |
| Denver West | ... | Himself (caver) | |
| Margaret Zupancic | ... | Herself (U.C. Berkeley) |
Producida por | |||
| Michael J. Cudahy | .... | productor ejecutivo | |
| Stephen Judson | .... | productor (como Steve Judson) | |
| Alec Lorimore | .... | productor | |
| Greg MacGillivray | .... | productor | |
Música original por | |||
| Graeme Edge | |||
| Daniel May | |||
| Ray Thomas | |||
| Steve Wood | |||
Fotografía por | |||
| Brad Ohlund | (director de fotografía) | ||
Montaje por | |||
| Stephen Judson | |||
Dirección Artística por | |||
| John Riggs | |||
Dirección de Producción | |||
| Cris Andrei | .... | director de producción | |
| Len Bucko | .... | director de producción | |
| Josh Colover | .... | director de producción (como Joshua Colover) | |
| Arturo Del Rio | .... | production manager: Mexico | |
| David Frost | .... | director de producción | |
| Earl Wiggins | .... | jefe de producción | |
Departamento de sonido | |||
| Paul Curtis | .... | editor de diálogo | |
| Andrew DeCristofaro | .... | sound effects designer | |
| Marshall Garlington | .... | sonido | |
| David Myslek | .... | editor de sonido | |
| Michael Orlowski | .... | editor de efectos de sonido | |
| Aaron Rihel | .... | grabador de sonido | |
| Martin Schloemer | .... | grabador de sonido | |
| Ann Scibelli | .... | sound effects editor: EFX Systems (como Anne Scibelli) | |
| Dan Scolnik | .... | foley cue | |
| Dan Scolnik | .... | editor "foley" | |
| Bob Stewart | .... | additional dialog editor | |
| Ken Teaney | .... | sound mixer: Wilshire Stages | |
Efectos Visuales por | |||
| Daniel Rapo | .... | scanning & film recording | |
Cámara y Departamento Eléctrico | |||
| Eric Anderson | .... | asistente de cámara | |
| John Anderson | .... | asistente de cámara | |
| Chris Blum | .... | asistente de cámara | |
| Gordon Brown | .... | cineasta: ice caves | |
| Michael Brown | .... | asistente de cámara (como Mike Brown) | |
| Mark Chapman | .... | head rigger | |
| Kevin Chase | .... | operario de aparejos | |
| Pat Gilluly | .... | Jefe de Iluminación (gaffer) | |
| Ron Goodman | .... | aerial camera operator | |
| Howard Hall | .... | underwater cinematographer | |
| Mike Kirsch | .... | asistente de cámara | |
| Dan Lins | .... | underwater gaffer | |
| Bob MacDougall | .... | operario de aparejos (como Bob McDougal) | |
| Greg MacGillivray | .... | cineasta: Arkansas | |
| Bill MacLeod | .... | electricista | |
| Bill MacLeod | .... | jefe grip | |
| Neeld Messler | .... | grip | |
| Lance Milbrand | .... | asistente de cámara | |
| Christos Moisides | .... | asistente de cámara | |
| Tom Morris | .... | underwater gaffer | |
| Patrick O'Dea | .... | grip | |
| Jerry Pattin | .... | grip | |
| David Schultz | .... | head rigger | |
| Todd Semmes | .... | operario de aparejos | |
| Wes Skiles | .... | underwater cinematographer | |
| Chuck Stevens | .... | underwater gaffer | |
| Jack Tankard | .... | aerial camera operator | |
| Joel Tower | .... | underwater gaffer | |
| Robert Walker | .... | asistente de cámara | |
| Gary Walten | .... | underwater gaffer | |
| Earl Wiggins | .... | head rigger | |
Departamento de Edición | |||
| Charlie Fuguet | .... | post-production consultant: DKP 70MM Inc. | |
| Craig Edward Rogers Jr. | .... | asistente de post-producción | |
Otros miembros del equipo | |||
| Kit Anderson | .... | collaboration and contribution: Cincinnati Museum Center | |
| Karol Bartlett | .... | science advisor | |
| Hazel Barton | .... | science advisor (como Dr. Hazel Barton) | |
| Dr. Jacqueline Belwood | .... | collaboration and contribution: Cincinnati Museum Center | |
| Rick Bridges | .... | asesor técnico | |
| DeVere Burt | .... | collaboration and contribution: Cincinnati Museum Center | |
| Howard Chapman | .... | asistente de producción | |
| Allison Chase | .... | coordinador de producción | |
| Tom Cowan | .... | director de segmento | |
| Kim Cummingham | .... | in remembrance of: caving and research pioneer | |
| Kim Cunningham | .... | science advisor | |
| Damian Doucette | .... | explorador de locaciones | |
| Dave Duszynski | .... | collaboration and contribution: Cincinnati Museum Center | |
| Janna Emmel | .... | investigador | |
| Nancy Finley | .... | coordinador de producción | |
| Barbara Flagg | .... | investigador (como Dr. Barbara Flagg) | |
| Debbie Fogel | .... | controller | |
| Mary Kaye Kennedy | .... | collaboration and contribution: Cincinnati Museum Center | |
| Federico Laurent | .... | asistente de producción | |
| Larry Mallory | .... | science advisor (como Dr. Larry Mallory) | |
| Douglass McDonald | .... | collaboration and contribution: Cincinnati Museum Center | |
| Dr. Luc Moreau | .... | science advisor | |
| Dr. Norman Pace | .... | science advisor | |
| Dr. Arthur Palmer | .... | science advisor | |
| Margaret Palmer | .... | science advisor | |
| Gordon Quattlebaum | .... | coordinador de producción | |
| John Scheltens | .... | investigador: National Speleological Society | |
| Wes Skiles | .... | director de segmento | |
| Kay Walten | .... | coordinador de producción | |
| Dr. Jill Yager | .... | science advisor | |
Agradecimientos | |||
| Jose R. De La Torre Ph.D. | .... | special thanks: College of Natural Resources, University of California at Berkeley | |
| Alaine Gerente | .... | special thanks: Group 47 | |
| Professor Antje Hofmeister | .... | special thanks: College of Natural Resources, University of California at Berkeley | |
| Bruce Russell | .... | special thanks: BioMEDIA Associates | |
| Steven Ruzin Ph.D. | .... | special thanks: College of Natural Resources, University of California at Berkeley | |
| Créditos de la compañía | Especificaciones Técnicas | Detalles principales |