LAST DESCENT

· The Deep Vein Book 7 · Deep Ground Press
3 reviews
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233
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About this ebook

The graph had been climbing for eleven days before anyone thought to show it to Sarah Kessler. Fourteen weeks, and counting, before the network's deepest chamber reaches a failure threshold with no name yet — only a number, and seven books' worth of accumulated knowledge about to be asked, all at once, what it actually adds up to.

LAST DESCENT reunites the full ensemble of THE DEEP VEIN for one final expedition, past every previously recorded boundary of the network's known geography, to the Repository — the network's oldest, deepest chamber, and the place every anomaly since OREBODY was always pointing toward. What they find there answers the series' oldest questions and asks one final, harder one: not whether they can save what they've spent seven books learning to understand, but what they owe it, now that they finally do.

The concluding volume of THE DEEP VEIN — a seven-book hard science fiction series about discovery, responsibility, and the difference between deciding fast and deciding well.


The graph had been climbing for eleven days before anyone thought to show it to Sarah Kessler. Fourteen weeks, and counting, before the network's deepest chamber reaches a failure threshold with no name yet — only a number, and seven books' worth of accumulated knowledge about to be asked, all at...

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Ratings and reviews

3 reviews
Alam Syah
September 7, 2026
The tension is excellent because the story doesn't rely on constantly escalating explosions or conventional action. The countdown toward the chamber's failure threshold creates pressure, but the real suspense comes from uncertainty. The characters finally have enough information to understand the problem—and that knowledge creates an entirely new responsibility.
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Ameliadwi
September 7, 2026
There is something surprisingly emotional about reaching the end of a journey that began with Orebody. The series has always been about discovery, but Last Descent makes the consequences of discovery personal. The final decisions feel connected to everything the characters have experienced along the way.
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About the author

Andi is a senior geological engineer with more than seventeen years of experience across Indonesia’s oil and gas, mining, and infrastructure sectors. He holds a degree in Geological Engineering from Institut Teknologi Bandung and has worked as a geologist, petrophysicist, and technical decision-support professional on projects spanning the South Sumatra, North Sumatra, NW Java, NE Java, and Salawati (Papua) basins, an international reserves evaluation in Madagascar, geotechnical quality control on the Batang Toru Hydroelectric Power Plant in North Sumatra, and nickel exploration in Halmahera.

His work centers on subsurface evaluation, resource and reserves assessment, and — perhaps most relevant to this book — the discipline of contributing sound technical judgment to high-stakes decisions made under real uncertainty and real deadlines, alongside multidisciplinary teams who don’t always agree.

He has been a reader of hard science fiction for most of his life, drawn especially to stories that treat technical and ethical uncertainty as the actual substance of drama, rather than an obstacle for a single brilliant character to clear alone. THE DEEP VEIN series — and LAST DESCENT, its seventh and final installment — is his attempt to build that kind of story himself, using the instincts, the vocabulary, and the hard-won respect for incomplete data that seventeen years of subsurface work gave him.


Andi is a senior geological engineer with more than seventeen years of experience across Indonesia’s oil and gas, mining, and infrastructure sectors. He holds a degree in Geological Engineering from Institut Teknologi Bandung and has worked as a geologist, petrophysicist, and technical decision-s...

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