Rubble & Crew Episode 16 The Crew Builds an Observatory / The Crew Builds a Zipline Episode Title: The Crew Builds an Observatory / The Crew Builds a Zipline Episode Description: The Crew Builds an Observatory: At the Bark Yard, Rubble, Mix, Charger, Wheeler, and Motor meet a new resident named River who photographs them and also them her photographs of the things that Rubble & Crew built. As there is a shooting star tonight which River wants to photograph, Rubble & Crew plan to build an observatory on the top of Tooltop Mountain as Rubble enlists Camila to bring the biggest telescope to Tooltop Mountain. Once the things are procured, Rubble & Crew work to get to the top of Tooltop Mountain to build the observatory before nightfall while contending with the cold temperatures. The Crew Builds a Zipline: Rubble, Mix, Charger, and Wheeler drive out to the forest where they meet Park Ranger Rose who takes them on a nature hike. While on the nature trail, Park Ranger Rose cautions them to stay on the trail and not to disrupt anything in nature as they plan to complete their hiking before sunset. They are soon followed by Crunchy the Beaver who ends up eating the suspension bridge. With the suspension bridge out of use, Rubble & Crew work on obtaining natural materials to make a zipline. Grandpa Gravel, Auntie Crane, and Motor are called in to help establish the zipline on the other side of the canyon.