Stone Shaft Mining
Mining Camp - CastleEvolution
Stone Shaft Mining
Castle
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"+15% Stone gathering rate"
Coach's Tip
Stone Shaft Mining is the Castle Age stone upgrade. Research it if you plan to build multiple Castles or need lots of stone walls.
Strategic Analysis
Strategic Identity
Stone Shaft Mining is the Castle Age stone upgrade. Research it if you plan to build multiple Castles or need lots of stone walls.
When to Research
High Priority
Research Stone Shaft Mining as soon as you have the resources and are using economy units.
Combat Impact
+15% Stone gathering rate
Civilization Access
* 35 civilizations have access to this technology.
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AoE Coach analysis
Context & meta
Stone Shaft Mining is a Castle Age technology researched at the Mining Camp. It costs 175 food and 75 wood and takes 75 seconds. Villagers gather stone +15% faster. The effect improves the stone economy that pays for Castles, walls, Town Centers, and other stone demands, but it does not add stone immediately or improve gold and wood gathering. Its return depends on the number of miners and the amount of stone still needed. This is a targeted economy technology: it is valuable before several stone expenditures and weak when the base has already finished its only stone project.
History & balance
Stone Shaft Mining is designed for a resource with a burst demand rather than a constant military rate. The technology asks the player to forecast a Castle, wall line, or Town Center plan far enough ahead to survive the 75-second research window. Its +15% effect is meaningful when miners remain active, but the resource can become irrelevant once the planned structures are paid. That creates a clean balance trade: a player may secure future map control through faster stone, or spend the same food and wood on units now. The technology rewards planning the next stone project, not mining by habit.
In pro play
Research Stone Shaft Mining when at least six to eight Villagers will stay on stone and the plan needs two or more Castles, a long stone wall, or several Town Centers. Reserve 175 food, 75 wood, and the 75-second Mining Camp window before the next stone timing, then keep the miners protected because an idle or raided line cannot repay the bonus. Do not research it for one nearly funded Castle. The clean decision compares the +15% rate with the remaining stone demand and the delay to the next military batch. If the opponent is already on your resources, units and walls come first.
How to counter it
No military unit counters Stone Shaft Mining itself. The classic timing error is researching it after most stone is already gathered, or paying 175 food, 75 wood, and 75 seconds with too few miners to recover the cost. A practical threshold is six to eight active stone miners with two or more planned stone structures ahead. Pressure the Mining Camp or force the player to spend stone elsewhere before completion; after the upgrade, raid the line because the +15% rate stops when Villagers stop working. The opportunity cost is delayed units or walls. If stone timings keep producing surprise Castles, AoE Coach reads your matchup and gives you the composition and timing.