It’s hard to hear the ringing from outside the grove too, so make sure to actually take a peek inside if you’re looking for caches. Also, if you hear the cache ringing from underneath a giant hatch in the ground, you need to find and hack the control panel that says “open flood gate”
-sincerely, a Tenno who spent an embarrassingly long amount of time cache hunting for Nightwave this week
Good tip, thank you!!
The location that gave me the most trouble was the dual fans tile, the one where they block your path and you need to go through or over them. The cache is hiding in the control tower off to the side of the main path, and you need to jump through a vent hole that is really dim and obscured by other props.