FILM · 2005 · GERMANY
The Cave
21 archived facts 3 topics 1 source Last reviewed Oct 2026
All facts (21)
- #001
A 750,000-gallon tank was built for the underwater photography.
- #002
The film claims some of its foundations are based in reality, particularly the discovery of new micro-ecologies in deep caves in Romania. According to the film's consultant Dr. Christi Lascu (a well-known cave scientist and the Romanian editor of National Geographic magazine), 35 new species were found in the Movila Caves in the late 1980s. Among the species found was a 10 cm centipede with a venomous bite. Nothing in the film addresses the size of the creature, but in theory there is no limit to the size of animals living below.
- #003
It was shot mostly in Romania, which has more than 12,000 registered caves.
- #004
One of the film's producers, Andrew Mason, says that to make the film as technically convincing as possible they hired some of the world's greatest cave divers as consultants.
- #005
It was released in the same year as The Descent (2005), another horror film about people being attacked by monsters in a cave.
- #006
The actors sometimes had to spend up to 10-12 hours a day continuously in and out of the water in diving suits.
- #007
One of the scenes at the beginning of the film uses the same set as Underworld: Evolution.
- #008
The film was initially much more violent and horrifying; Charlie's death had to be heavily edited to achieve a PG-13 rating.
- #009
The V. S. S. F tattoo is visible on the creature when Dr. Nicolai is taken.
- #010
Every fauna specimen in the cave system is infected by a parasitic organism, and some mutated animals are shown in certain scenes. The digital scorpions were created by Luma Pictures. Tatopoulos Studios also brought to the screen a mutant mole, a mutant salamander and mutant eels, all made by Dan Platt. The mole was a simple puppet with crude mechanisms for moving the head. The salamander was a flexible rod puppet. Two rods were attached to it and moved alternately to create an organic crawling and swimming motion. The eels were created as a rod puppet with mouth-opening mechanisms and as wire-controlled puppets that could swim in water.
- #011
The monsters also display other strange features: they have both outer and inner jaws that can move independently of each other. In addition, the teeth of the outer jaws are only partially articulated and can expand inward and outward to better grip prey; this last feature was added to give the characters "more life." Sensory whips protrude from the monsters' backs and help them locate their position. Steve Wang, the lead sculptor and painter as well as art director, also designed the design's vestigial eyes, covered by a layer of semi-transparent skin membrane. Hunt also stated that certain parts of the creatures' surfaces had to be covered with a protective exoskeleton. Since the monsters are human in origin in every respect, Bruce Hunt wanted to instill character in them and gave them "taunting" behavior and attitude as well as considerable intelligence and tactical knowledge.
- #012
As of 2016, it is director Bruce Hunt's first and last film.
- #013
It was the first film shot with the Arriflex 235 camera.
- #014
The song at the end of the title sequence is Nightwish's song Nemo.
- #015
It was Bruce Hunt's directorial debut.
- #016
Piper Perabo and Lena Headey also appeared in Imagine Me & You.
- #017
The cave's creatures were brought to the screen as performers in suits and as digital models. The sculptures of the creatures were made by Steve Wang, Tully Summers and other sculptors. The use of suit performers as the main technique for the creature effects was established from the start. This decision also influenced the design of the monsters; Himber said: "The only real limit we gave ourselves was, you know, we have to work with this human form, we want to hide it effectively, and because of that the design became interesting." A picture of artist Brian Steele in a crouching position was actually used to draw a silhouette of the creature design over the photo to determine the true proportions and length of the arm extensions. Structurally, the costume covered only the artist's head, arms and torso. The lower body and legs of the real monster, and the lower body and legs in front of them, were covered with black or green screen fabric. The legs could therefore either blend into the dark environment or be digitally removed in post-production. A total of seven suits were built; interestingly, five of them were hero suits and only two were stunt suits. All the costumes had a hole in the monster's belly that allowed the performer to enter the suit safely; depending on the shot, real legs could be attached or removed and puppeteered with wires or rods. The heads were especially heavy, but a strange system transferred their weight to the artist's back. Tatopoulos explained to SFX magazine: "The head was mounted on a helmet molded to the performer's head. A web of elastic straps actually transferred all the weight of the head to a kind of backpack that the performer wore under the costume. The head itself was equipped with thirty different mechanisms. There was a triple-moving jaw that opened like a sea anemone and a transparent membrane covering the eyes." The suits' skin was molded from foam latex, while the semi-transparent eyelids and jaw tendons were molded from transparent textile. The outer teeth were molded in resin, and the inner teeth were cast in solid resin. All the suits could also be fitted with two wing versions, an open pair and a closed pair. Tatopoulos said, "You should know that reproducing the flapping motion at a mechanical level is a very complex movement. I have never seen fully convincing animatronic wings in any film." A featureless puppet depicting a dead creature and a skeleton were also made.
- #018
As post-production progressed, the initial number of planned digital creature sequences gradually increased. Shohadai explained: "Throughout the film there is a mix of practical suited creatures and CG animation. The initial intentions were to rely more on the costume than the CG creature, using CG mainly in dark and medium and wide shots and the costume in close-ups or bright shots. But as time went on, the producers and the director began to see how well the CG creature held up in such shots. They began to ask for more and more CG animation in closer and more brightly lit shots. The CG creature not only performed well in terms of quality, it was also not limited by the movements of a suit performer, which allowed for more dynamic and exciting action."
- #019
Cole Hauser and Morris Chestnut appeared together in Higher Learning 10 years earlier.
- #020
Cole Hauser and Piper Perabo appeared together in Yellowstone.
- #021
For more complex actions performed by the creatures, such as jumping, running or flying, the creatures were brought to life with digital effects by Luma Pictures. Visual effects supervisor Payam Shodahai, who is also the founder of the visual effects company, told Animation World Network: "We had done previous work for the production company, including The Human Stain and Wicker Park, and so we had been under consideration since the beginning of the production. However, since our previous CG creature/character work was nowhere near this scale of complexity, there were naturally some reservations about giving us the visual effects facility role, especially since Bruce Hunt had prior relationships with another facility. But when The Cave came along, we had built a reputation as a company that could handle whatever the difficulty. So in the end we convinced the director and the job was ours."
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