Launch to the poles was a mission in The Precursor Legacy that Jak and Daxter completed to obtain a power cell. Jak discovered another power cell high up in Spider Cave.
Walkthrough[]
When entering the large cavern with the precursor robot in Spider Cave, hold a left and continue past the bottomless pit. At the end here, you'll find a precursor platform and some blue eco; take the platform down and subsequently use the launcher hidden away here to launch yourself back up. You'll end up at a total of 16 swinging poles (4 by 4) and a bunch of Precursor orbs and some blue eco.
From here go swing and jump left while making sure to be channeling blue eco; you'll see another precursor platform which will be activated when you jump onto it. It'll fly up and bring you next to a power cell.