Cover of Heart of Azure Mountain

Heart of Azure Mountain

Suspense · 336 pages · Published 2025-06-18 · Avg 2.8★ (5 reviews)

After a rockslide exposes a long-sealed research bunker on Azure Mountain in northern New Mexico, ranger Mara Ellison discovers a bloodstained field journal and a brass compass etched with initials. Investigative podcaster Cal Redding arrives chasing the cold case of Dr. Owen Park, a hydrologist who vanished during the 1999 drought scandal. When a cipher in the journal points to a shaft beneath the Blue Needle chairlift, a masked snowcat blocks the only service road, forcing them onto a treacherous ridge trail.

Cut off by an incoming storm and a fast-moving wildfire, Mara and Cal follow coordinates scratched on a 1978 topo map to a limestone tube locals call the Heart. Inside, an illegal conduit drains the aquifer toward a shuttered copper mill, and someone with a silenced rifle will do anything to keep it running. Armed with an avalanche beacon, a stuck ham radio, and two expired flares, they gamble on the forgotten funicular tunnel beneath Switchback Gulch, where every footfall echoes like a countdown.

David Smith (born 1982) is an American suspense novelist and former search-and-rescue dispatcher. Raised in Pagosa Springs, Colorado, he studied geology at Fort Lewis College and later worked as a cartographic technician with the U.S. Forest Service. His reporting on water rights and wildfire recovery appeared in regional magazines, and he has taught map-reading workshops for volunteer crews. He lives in Bellingham, Washington, where he hikes in the North Cascades and writes early in the mornings.

Ratings & Reviews

Tomas Kincaid
2026-02-20

As an outdoor ed coordinator, I look for thrillers that respect terrain and hydrology, and this one mostly does.

  • Gritty mountain logistics and weather science
  • Set pieces in the Heart and the old funicular tunnel
  • Dialogue sometimes flat, but moral stakes clear
Janelle Ortega
2026-01-14

The book earns points for how it treats the high desert as infrastructure: thin snowpack, limestone breathing, and an aquifer rigged like a siphon to a dead copper mill. You can almost feel the powder-dry air in the funicular tunnel and hear the echo of each footstep, though the masked snowcat figure belongs to a different register and jolts the otherwise grounded eco-crime logic.

Priya Anderton
2025-12-28

Mara reads as competent but sealed off, and Cal's on-air bravado rarely cracks to show a person beneath the podcast patter. Their exchanges too often pass information instead of revealing allegiance or doubt.

The drought scandal and Dr. Owen Park case give both a reason to push into danger, yet aside from one quiet moment with the bloodstained journal and compass, I struggled to see what either stood to lose beyond their jobs.

Colin Hsu
2025-09-21

Ellison's first-person chapters are lean and observant while Redding's transcript-style interludes add texture, but the handoff between them is fussy and stalls momentum in the middle third. The field journal excerpts tease a larger pattern around the 1999 drought scandal, and the brass compass motif threads back neatly to the Blue Needle clue. Still, the rush from ridge trail to topo-map coordinates to the Heart plays like a sequence of checkpoints rather than escalation, so when the ham radio sputters and the flares misfire, the scene-level tension lands but the arc feels choppy.

Lena Marquez
2025-07-03

The mountain dangers stack up fast, but the cipher chase and funicular gambit feel mechanical, turning the storm, wildfire, and masked snowcat into noise more than menace.

Generated on 2026-02-25 12:02 UTC