From the same waters that swallowed Krakatoa's fury in 1883, its volcanic heir has stirred again — this time sending invisible clouds of ash drifting more than 150 kilometers to silence one of Southeast Asia's busiest airports. On Sunday, Soekarno-Hatta International suspended all operations as Mount Anak Krakatau's plumes climbed to 15,000 meters, grounding dozens of flights and reminding the modern world that the earth's oldest forces still set the terms. The disruption was not born of human error or political will, but of geology — patient, indifferent, and vast.