About this guide
A companion for the third night.
A field guide for one puzzle
Floor Three Field Notes is an independent guide and arithmetic tool for The Hollow’s third-floor grave lock on Roblox. It pairs a quick answer with a grave log, a recorded walkthrough and source notes.
We do not run Roblox or The Hollow and cannot award items, access your account or change your game. The calculator asks only for the years shown on the stones. There is no Roblox login on this site.
How the guide is checked
Gameplay instructions refer to credited creator recordings. Event and catalog facts refer to official Roblox records. Sample answers are labeled as examples. A source review date describes when the evidence was checked, rather than claiming a new game update.
Read the source and image credits or check the troubleshooting notes. Future corrections should be checked against those primary records before changing the instructions.