The upcoming Week 4 Battle Star is located between a Gas Station, Soccer Pitch and Stunt Mountain. This Battle Star for the Week 4 challenge will be available next week on Thursday, August 2.
The general area where the battle star will spawn is west of loot lake. Here you can find the three points of interest, the gas station, soccer pitch and stunt mountain. Just west of the gas station you can see a big dirt patch that will spawn the week 4 battle star.