Venalem is an age that was integral for the ink making process used to make ink for linking books. Essentially the world was an ice world with these bulbs that would grow under water. The sub was used to dive underwater and cut a bulbs down at their stalks. The bulbs were then loaded into the harvester. At which time the beetles, used to make ink, were placed within the bulbs while in their larva stages. The bulb would serve as a terrarium while the harvester was rotated to simulate a quicker passage of time and thus a shorter gestation period for the beetles. Once the beetles reached maturity they were collected from the bulbs, and the bulbs were removed from the harvester, what the beetles didn't eat of the interior of the bulb during their life cycle, the workers would manually hollow the rest of the bulb out and then used them as living quarters and buildings within the landscape. They'd be retrofitted them with walkways in their interiors etc now that they were hollow.