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Fort Medusa (メデューサの (とりで) Medūsa no Toride) is the one hundred and eighty-fourth chapter of the Dr. Stone manga.

Summary

The chapter begins somewhere outside of Araxá, with Ryusui dramatically stating he can smell the rare rocks ahead. Chrome wonders how such a convenient place for finding minerals could be possible, so Chelsea demonstrates by using water and some dirt in a pan to separate out the various ores by their specific gravities, similar to gold panning. Senku adds that Araxá is basically that but on a global scale. Gen then says that by using the resources, humanity is like a nasty little parasite compared to the awe of how the world works, however Kohaku butts in, saying that how humanity managed to survive and accumulate knowledge is a lot more awe-inspiring, firing Taiju up.

Fort Medusa established!

They build a sizeable defensive fort, as Gen questions why and Senku says that they have to ready for the fight against Stanley. Senku pointed out he noticed Xeno's magnetized claw, and that he figured he must have messed with the radio signal and alerted him to their location. This forced them to speed up their plans a little, as Ryusui realizes they needed to lure Stanley regardless to retake the Perseus for future journeys.

Tsukasa and Hyoga then have a short conversation while wrapping their wounds about how they think the battle will go, and neither of them are very optimistic.

The group then begin trying out different ways of attacking using the medusas, such as throwing them similar to how Kirisame used hers, or making tripwires that activate using pre-recorded messages, however neither were very effective due to abilities and chances of misfires. A small group then goes and mines for diamonds to make batteries with, and an underwater water wheel was constructed for use as a sneaky grinder.

As it turns out, the construction of the devices is too intricate for Kaseki, and he struggles with prying them open without damaging them. Kaseki says they'll be lucky if they manage to complete even one or two of them.

More attack trials are conducted such as activating it using Ukyo's arrow, however Ukyo's range would be similar to that of the guns'. Taiju then suggests that he simply run over to where the Americans are and activate it with a sort of suicide run since petrification would heal any injuries, but is told not to because a shot to the head would kill him instantly. Chrome, having a stroke of brilliance, says they could simply petrify everyone, and have someone really far away ready to walk back and depetrify them after the fight is over. As a failsafe, Senku sets up the device so that any member of the Kingdom of Science could activate the device from one of the many microphones set up around the fort, rather than just rely on one person to not get shot.

Characters in Order of Appearance

Chapter Notes

  • The science group construct a fort.
    • Senku reveals that he is aware Xeno contacted Stanley, and that Stanley will be arriving ahead of schedule.
  • The goal of the battle is to beat Stanley and reclaim the Perseus.
    • The next goal city will be across the Atlantic Ocean, possibly Math City.
  • Hyoga and Tsukasa are revealed to still be healing from their gunshot wounds.
  • The group try out several petrification-device-based traps, although none are particularly effective.
  • An underwater waterwheel is constructed for polishing the diamonds.
  • More diamonds are mined.
  • Kaseki struggles with the delicateness of the devices, and states only one or two might be made in time.
  • The battle plan for against Stanley is to set up several microphones around a single medusa, so that any member can activate the device and petrify the whole area.
    • One member needs to be a safe distance away to depetrify everyone once the medusa goes off.

Trivia

  • The shape of the tower built to hold the medusa is similar to the first stage of the Saturn IB rocket.[1]
  • Gen's petrification mark is missing on page 2.

References

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Story Arcs
Prologue Saga
Stone Formula Arc
Chapters 1234
Episodes 12
Vs. Tsukasa Arc
Chapters 56789101112
Episodes 345
Ishigami Village Saga
Kingdom of Science Arc
Chapters 131415161718192021222324252627282930313233
Episodes 5678910111213
Village Games Arc
Chapters 34353637383940
Episodes 131415
Village Origins Arc
Chapters 4142434445
Episodes 1617
Stone Wars Saga
Vs. Hyoga Arc
Chapters 4647484950
Episodes 1819
Communications Arc
Chapters 5152535455565758596061626364656667686970717273747576777879808182
Episodes 20212223242526272829303132333435
Source of the Petrification Saga
Age of Exploration Arc
Chapters 8384858687888990919293949596979899 100
Episodes 35
Treasure Island Arc
Chapters 101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138
Episodes
The Truth of the Petrification Saga
New America City Arc
Chapters 139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169
Episodes
South America Arc
Chapters 170171172173174175176177178179180181182183184185186187188189190191192193
Episodes
New Stone World Arc
Chapters 194195196197198199200
Episodes
Europe Arc
Chapters 201202203204205206207208209210211
Episodes
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