Partly updated for Enshrouded 1.0— 1.0: the unlock cost; the rest is pre-1.0 wiki data

Mason
The Pickaxe deals 30% more damage against stone objects, including resource veins.
Where Mason sits on the 1.0 tree
In the Core area. It touches a starting point, so it costs 1 point to reach.
Builds that use Mason
1 preset build tagged MASON — defining picks first, then ranked by tier (S → A → B).
Related Survivor skills
Same archetype — likely candidates to slot next to Mason in a build.
Fisherman's Resolve1pIncreases your Fishing Endurance by 30%. Allows for extended battles with hooked fish.
Lumberjack1pFelling axes do 30% more damage against wooden objects including trees.
Opportunity1pValues in the 1.0 files: 40% per rank, 3 ranks.
Power Parry1pEnemy Stun Bar gain from parries is increased by 30%.
Quality Gear1pValues in the 1.0 files: 20%.
Saviour1pYou only need 3 instead of 6 seconds to revive an ally.
Well Rested1pThe base duration for the Rested buff is increased by 5 Minutes. Increase the Comfort in your home to further increase the duration.
Backstab Damage2pIncrease the damage you deal from behind by 25%.
Sources: game files 1.0 + Keen Games 1.0 patch notes (changelog, combat changes) for the unlock cost; enshrouded.wiki.gg (pre-1.0) for the description and effects.