Hammaphore System
The Hammaphore System is the secret underground network that connects all hammaphore trees on the planet. Distances inside the System are much shorter than distances in the outside world. This means travel inside it is really quick and efficient. It is not yet quite understood how this actually works.

Tunnels and intersections are very well signposted, so it’s almost impossible for a Hammaphore System Traveler (known as H-travelers) to get lost.
When new hammaphore trees grow, the signposts automatically update. Lighting in the tunnels is provided by natural soil phosphorescence, so no flashlights are needed.
Who gets access to the system is a complicated and largely unknown process. Experts have been studying it for several years now, and it’s proving elusive to fully understand.
What we do know is that it tends to be open to people who are intrinsically brave, curious, and well-intentioned. If you have these personality traits, you might well find a “door” when up a hammaphore tree. But not always. So it seems like these personality pre-conditions are necessary but not sufficient. And then to complicate matters further, there are a handful of documented cases where someone ill-intentioned, i.e. someone with bad intentions, someone bad, has used the System.
Several on-going studies will hopefully share further light on how the Hammaphore System works. The one undertaken by Professor Maria Yankel-Zog-Zoglio at the University of Inner-Scratchford holds particular promise.
First seen in Book 3, page 76
Research
e_hammaphore_systemIn the printed almanac pages (7 cited)
Straight from the books
Facts
place_fact (1)
Inside the Hammaphore System there are signposts including to Mrs. Rosebank's office, Moremi Forest entrance, Eiffel Tower, and Central Park.
SIGN: MRS. ROSEBANK'S OFFICE SIGN: MOREMI FOREST ENTRANCE SIGN: EIFFEL TOWER SIGN: CENTRAL PARK b03:c04:p082
world_rule (12)
The Hammaphore System is the secret underground network connecting all hammaphore trees on the planet; distances inside the System are much shorter than in the outside world.
The Hammaphore System is the secret underground network that connects all hammaphore trees on the planet. Distances inside The System are much shorter than distances in the outside world. al1:c01:p114
Lighting in the Hammaphore System tunnels is provided by natural soil phosphorescence.
Lighting in the tunnels is provided by natural soil phosphorescence, so no flashlights are needed. al1:c01:p114
Access to the Hammaphore System tends to be open to people who are intrinsically brave, curious and well-intentioned.
What we do know is that it tends to be open to people who are intrinsically brave, curious, and well-intentioned. al1:c01:p115
The Hammaphore System is the secret underground network that connects all hammaphore trees on the planet.
The Hammaphore System is the secret underground network that connects all hammaphore trees on the planet. b03:c99:p194
Distances inside the Hammaphore System are much shorter than distances in the outside world.
Distances inside the System are much shorter than distances in the outside world. b03:c04:p083 b03:c99:p194
Tunnels and intersections inside the Hammaphore System are very well signposted, making it almost impossible to get lost.
Tunnels and intersections are very well signposted, so it's almost impossible for a Hammafore System Traveler to get lost. b03:c99:p194
When new hammaphore trees grow, the signposts in the Hammaphore System automatically update.
When new hammaphore trees grow, the signposts automatically update. b03:c99:p194
Lighting in the Hammaphore System tunnels is provided by natural soil phosphorescence, so no flashlights are needed.
Lighting in the tunnels is provided by natural soil phosphorescence, so no flashlights are needed. b03:c99:p194
The Hammaphore System is the secret underground network that connects all hammaphore trees on the planet.
The Hammaphore System is the secret underground network that connects all hammaphore trees on the planet. b08:c05:p133 b08:c99:p259
Distances inside the Hammaphore System are much shorter than distances in the outside world, making travel inside it really quick and efficient.
Distances inside the System are much shorter than distances in the outside world. This means travel inside it is really quick and efficient. b08:c99:p259
Tunnels and intersections in the Hammaphore System are very well signposted, and when new hammaphore trees grow, the signposts automatically update.
Tunnels and intersections are very well signposted, so it's almost impossible for a Hammafore System Traveler to get lost. When new hammaphore trees grow, the signposts automatically update. b08:c99:p259
Lighting in the Hammaphore System tunnels is provided by natural soil phosphorescence, so no flashlights are needed.
Lighting in the tunnels is provided by natural soil phosphorescence, so no flashlights are needed. b08:c99:p259
Relationships
Incoming
Every hammaphore tree has a secret doorway into a passage, which connects to all other hammaphore trees on the planet. This is known as the Hammaphore System. al1:c01:p116
Every hammaphore tree is said to be over 500 years old. Each one has a secret doorway into a passage which connects to all other hammaphore trees on the planet. b03:c04:p078
Incidents
Continuity findings
- Hammaphore System traveler label: Hammafore System Traveler / Hammaphore System Traveler variant
- Hammaphore tree underground passage system used as transit route recurring_element
- Hammaphore System: recurring in-world travel network across b03, b08, al1 recurring_element
- al1 retells Hammaphore System world-rules from b03 almanac_overlap













