Pairing Jump Reels With Acoustic Tieoff Markers

Jump reels connect the main line to a side passage; acoustic tieoff markers register those connections in the quilt. EchoQuilt pairs physical reel anchors with sound-map coordinates so survey teams can audit every jump point without revisiting the physical line. The result is a dive-continuation tool for survey campaigns with many leads.

A Mexican cave survey team laid a jump reel off the main gold line at Sistema Dos Ojos in 2019. The primary tie-off was firm, the secondary was secure, and the jump fed a promising side lead that produced 180 meters of new passage on first survey. The team returned six months later to push the lead further — and could not find the jump. Flow had shifted the main line several meters. The primary tie-off was still there but now sat in a slightly different chamber-shape context than memory suggested. The team spent the first forty minutes of the second expedition swimming back and forth trying to locate their own jump.