Fossils & Digging

Introduction

Fossils and digging are the economic engine of Prehistoric Farm. You hold your shovel on a dig site, a meter fills, and you release at the right moment — the green zone — to pull better finds. The quality of your shovel decides how much each dig site pays out, and the island you are on decides which fossils and gem fossils can drop. Gem fossils like aquamarine, jasper, topaz, emerald and obsidian have dedicated dig spots spread across the islands, and players hunt them both for their high sale value and for the rare set pieces they tend to accompany. This hub explains the green-zone mechanic in detail, ranks every shovel tier, lists the known gem dig locations from community exploration, and gives you grinding routes that keep your fossil bank full without wasting time on low-payout sites.

Gem Fossils & Dig Sites

Digging Essentials

Core Mechanics

The digging minigame is a timing loop. You stand on a dig site, hold your shovel button, and a meter swings across the dig overlay. When it is somewhere in the green zone you release, and the game rewards a better find — more fossil pieces, better gem fossils, and fewer common filler drops. Timing outside the green still digs, but with noticeably worse payout odds. Shovel upgrades raise the base payout of every dig site: a higher-tier shovel not only digs faster but also increases the chance of pulling rare pieces and gems from the same spot. Dig sites are scattered around every island, and they respawn after a short cooldown, so a good grinding route is a loop of dig sites that respawns just as you finish the circuit. Islands unlocked later in the game hold stronger dig sites, which is why completing the island progression and upgrading your boat indirectly income-drives your fossil collection.

Advantages

Good fossil technique pays off immediately in efficiency. A player who consistently hits the green zone will pull significantly more rare pieces per hour than someone who mashes release, which means faster set completions and more eggs. Gem fossils add a bonus income spike on top: a single aquamarine or obsidian sale can fund a shovel upgrade that ordinary dig filler would take a long time to cover. Because dig sites respawn, a well-planned route converts idle time into a steady trickle of fossils, and the deeper islands' stronger sites mean the same digging effort produces more value as you progress. Knowing the rag-rare dig spots also lets you stack a Double Luck window exactly where it matters, turning a short boost into a targeted gem-hunting session rather than a generic grind.

Challenges

Digging is a time sink before it is a strategy. Rare fossil pieces are famously stingy, and completing the later sets can take many trips to the right island. The green-zone mechanic also punishes rhythm problems — on mobile the meter moves faster, and on console the release timing is slightly different, so players switching devices often dig worse for a whole session until they relearn the window. Gem fossil locations are community-reported and shift after updates, so a gem guide that is a week old can send you to a spot that no longer drops. Finally, shovel upgrades are expensive relative to the early-game coin influx, which creates a chicken-and-egg problem: you need a better shovel to earn coins faster, but you need coins to buy a better shovel.

Frequently Asked Questions

Quick Tips