Gearclan is called the "Clan of Engineering" simply because they are the clan of engineering. These cats can build anything, be it robot or microwave (not that they would know to call it that).
Ranks
Leader: First-in-Command
Deputy: Second-in-Command
Medicine Cat: Healer
Medicine Cat Apprentice (MCA): Healer-in-Training
Prophecy Teller: A cat that can decipher almost any prophecy given to them.
Engineer Captain: The leader of the engineer group, he/she reports to the clan leader and tells him/her their progress.
Engineers: Cats that build stuff for the clan.
Engineer Apprentices: Engineers-in-Training
Warriors: Cats that fight and serve for the clan.
Apprentices: Warriors-in-Training
Queens: She-cats due with kits or nursing kits.
Kits: Baby Cats
Elders: Old or disabled cats.
Camp
The camp is hidden in a large cave by the Pacific Ocean.
Leader's Den: In the left side of the camp, there is a small cleft. Go in there and you'll find the Leader's Den.
Medicine Den: In the back of the cave is a tunnel. It winds deep into the cave, with other tunnels branching off. There, you'll find the Medicine Den.
Prophecy Den: The Prophecy Den lies within the branching off tunnel closest to the Medicine Den.
Engineers' Den: This den is in the first smaller tunnel branching off from the main one.
Warriors' Den: This den is in a small cleft near the entrance to the cave.