This game is awesome, I've been playing for 6 hours solid since I bought it at 2 today. I've lost track of how many days have gone past. I've found what I believe to be a dungeon underground, I carefully skirted around it until I'm more experienced with better armour. That was during a 2-3 hour trek through the underworld where I realised just how easy it is to get lost down there, mazes of natural tunnels criss cross amongst themselves and if you don't leave a trail of torches behind you it's easy to forget that you've already been through a tunnel.
Halfway through that trek and running perilously low on pickaxes I built a workbench, forge and storage box deep underground. In it I left many valuable items which I found down there, gold, diamonds, valuable iron ore. If only I'd left some sort of marker to it so I could find it easier now =/
After a couple of hours of random tunnelling underground I decided I needed some fresh air so I headed upwards. Several iron pickaxes later I reach the surface to the beautiful sight of a new dawn, from the top of the biggest mountain in the area. Ten paces further and my dig upwards would have only been half the work it was. In memory of this trek and also a stunning victory over a lingering spider and some sort of zombie that hiccuped and destroyed a good portion of the locality I built a monument and lit torches upon the top so I can see where I triumphed over the clutches of the underworld. Also useful if I ever decide to try and find my diamonds again.
I have now built a new home, a nice wooden bungalow by the shore with doors and a vast amount of windows made from this stunning "glass" material. An underground passage connects it to my first primitive cave dwelling for when the urge to mine hits me in the middle of the night.
Now I finally rest easy in a solid house for the first time in what seems like months, the howls of zombies and skeletons soothing me to sleep...