Enter the Hunt
Buy your entry, create your hunter profile, choose your username and establish the identity you will carry through every stage.
A covered bridge treasure hunt
CROSSING
TIME Cross the old road. Find the new one.
Join the hunt. Build your hunter profile. Choose a path and solve your way to the landmark. There, the Bridgekeeper delivers the final clue over Meshtastic — and the last leg becomes a Bluetooth signal chase to the cache.
The Road Ahead
Five crossings. One cache.
The hunt begins here, but it does not stay on a screen. Enter, choose a road, and solve your way to the landmark. From there the Bridgekeeper takes over — first through Meshtastic, then through the final Bluetooth signal.
Choose Your Path
Several roads are waiting. Choose the puzzle path that appeals to you and make it your route into the hunt.
Find the Landmark
Work the clues in your chosen path. Every road eventually converges on the same physical landmark.
Meet the Bridgekeeper
At the landmark, open Meshtastic, connect to the hunt node and send your hunter username. The Bridgekeeper answers with your final clue.
Follow the Signal
The final clue puts you into the last search area. From there, use BLE signal strength as hot-and-cold guidance until it leads you to the cache.
The Road Book
Choose the road that suits the way you solve.
Once your entry is active, the Road Book opens. Several puzzle paths are available, each with its own trail of clues. Choose one road and follow it. Every road leads to the same landmark.
Unlocks after entry
Select Your Path
Different clues. Different ways of thinking. One destination. Pick the road you want to travel and it becomes your active path through the first leg of the hunt.
Path IShrinking CircleAvailable
Path IIWord SearchAvailable
Path IIIMemoirAvailable
Path IVThirty TimbersAvailable
Path VThe Long GameAvailable
All five paths lead to the same landmark. Each route is independent, but every one ultimately delivers the hunter to the same landmark. Pricing is built to reward teamwork. The $10 entry includes one path. A single hunter may buy all five paths, but each additional path costs progressively more: $15 for a second path, $20 for a third, $30 for a fourth, and $40 for a fifth. Form a team and split the work, and each hunter can choose a different path at the lowest $10 entry price, then share what the team learns.Your profile records the path you choose, but every route eventually hands off to the same field checkpoint.
The Vanishing Map
Every crossing begins in play.
On Winter 2026, the field begins to narrow. Circles disappear hour by hour across thirty days until four crossings remain. The map below is the public clock — live, automatic, and the same for everyone watching.
Choosing The Vanishing Map as your hunt path gives you one advantage: your private map runs exactly 48 hours ahead of this public field.
The Landmark
This is where every road meets the Bridgekeeper.
Your chosen path gets you to the landmark — not to the cache. Once you are physically there, open the Meshtastic app and connect to the Bridgekeeper. Send the same hunter username tied to your profile and the final clue comes back through the mesh.
Final Cache Location
The last leg is a signal hunt.
After the landmark handoff, hunters move from Meshtastic to nRF Connect. The final clue takes them into the last search area, where overlapping BLE signal fields become the guide. Watch signal strength, follow the strongest breadcrumb, and home in on the cache.
A hunter follows rising BLE signal strength from one overlapping beacon field into the next, using the phone as a digital breadcrumb trail toward the cache.
BLE breadcrumb illustration — overlapping signal fields guide the final approach.
Take the old road
Your first decision is simply to enter.
Register now, buy your entry, and choose the road you want to take. Your selected clue paths open Winter 2026. From there, solve your road to the landmark, receive the final clue from the Bridgekeeper over Meshtastic, then follow the BLE signal the rest of the way.
Enter the HuntFrom Theory to Terrain
The research had to become physical.
Crossing Time is the field continuation of my Detecting the Invisible research series. That work kept returning to the same question: what if the final problem in a treasure hunt is not simply where to look, but how to detect?
A treasure hunt built from the research.
The series began by looking at concealment, signal modalities, receiver tuning and the difference between something being hidden and something being present but effectively undetectable to the person using the wrong method. BLE became especially interesting because it gives an ordinary phone a live proximity signal without asking a hunter to carry specialized radio equipment.
Crossing Time turns those ideas around. Instead of only asking whether another creator might build a signal-driven endgame, I built one myself. The web clues get you to a real-world landmark. Meshtastic becomes a deliberate checkpoint and handoff. Then the final leg changes modalities again: hunters open nRF Connect and read BLE RSSI as a hot-and-cold proximity gradient through overlapping signal fields.
The point is not to prove every hypothesis in the research series. The point is to take the architecture out of the paper and put it under a hunter's feet—to see whether receiver choice, signal geometry, layered confirmation and a physically invisible electronic trail can create a satisfying final approach.
The last stage asks you to stop looking for the treasure and start listening to the environment in a different way.
The Detecting the Invisible series
Low Rents Research · March–May 2026
01 · Framework
The Generation of a Research Question
Reframes modern treasure-hunt design from simple concealment toward engineered non-detection and asks what conditions make a hidden path perceptible.
Read the paper → 02 · Beacon ResearchComparative Evaluation of Signal Modalities
Compares active beacon technologies and identifies BLE as a strong balance of accessibility, feedback, range and field practicality.
Read the paper → 03 · BLE Field TestEvaluating BLE Beacon Traceability
Tests BLE in real terrain and treats RSSI as a practical proximity gradient for the final stage rather than a precise electronic ruler.
Read the paper → 04 · PerceptionLenticular Disruption & Visual Concealment
Examines how visual complexity and expectation can delay recognition even when an object remains physically visible.
Read the paper → 05 · Signal EcologyInterspecies Communication as Signal Architecture
Explores receiver-specific information channels in nature and the broader idea that a signal can be present yet invisible to the wrong detector.
Read the paper → 06 · AcousticAcoustic Invisibility & Engineered Detectability
Uses bat sonar as an analogue for a hunt in which success depends on adopting the correct sensing modality rather than simply searching harder.
Read the paper → 07 · PlacementSignal Geometry
Asks what the physics of a detection technology implies about terrain, approach corridor and final container placement.
Read the paper → 08 · Receiver TuningClose Encounters & the Wrong-Tool Problem
Develops receiver tuning as the unifying concept: the signal may already be there; the decisive question is whether the searcher is calibrated to detect it.
Read the paper → 09 · System ArchitectureSearcher-Facing BLE + Owner-Facing Remote Alert
Brings the idea closest to a complete system: a local electronic confirmation for the searcher paired with remote awareness for the hunt operator.
Read the paper →The linked papers are research and hypothesis-building, not claims that any third-party treasure hunt actually used the proposed mechanisms. Crossing Time is where those ideas become an intentionally designed, known physical system.