Doc: (reading) "I have buried the DeLorean in the Del Gato mine adjacent to the old Boot Hill Cemetery as shown on the enclosed map. Hopefully it will remain undisturbed and preserved until you uncover it in 1955. Inside, you will find repair instructions. My 1955 counterpart" - that's me - "should have no problem repairing it so you can drive it back to the future. Once you have returned to 1985, destroy the time machine." Destroy it?
During the following Marty is examining the toy car Doc used in the first movie in the demonstration of how he planned to send Marty back to 1985.
Marty: Yeah, well, it's a long story, Doc.
Doc: (reading) "Do not - I repeat - do not attempt to come back here to get me. I am perfectly happy living in the fresh air and wide open spaces, and I fear that unnecessary time travel only risks further disruption of the space-time continuum. And please take care of - Einstein for me." Einstein?
Marty: He's your dog, Doc - Einstein - it's what you call your dog in 1985.
Marty walks over to a chess set, which Copernicus (Doc's 1955 dog) is sitting in front of, and moves a piece. Doc smirks at the mention of Einstein and continues reading.
Doc: (reading) "I know you will give him a good home. Remember to walk him twice a day and that he only likes canned dog food. These are my wishes. Please respect them and follow them. And so, Marty, I now say farewell and wish you Godspeed. You've been a good, kind, and loyal friend to me and you made a real difference in my life. I will always treasure our relationship, and will think on you with fond memories, warm feelings and a special place in my heart. Your friend in time, 'Doc' Emmett L. Brown." This says September 1st, 1885. I never knew I could
write anything so touching.
Marty: I know, I know Doc, it's beautiful.
Copernicus starts to whine. Doc goes over to him.
Doc: Oh, it's all right, Copernicus! Everything's going to be fine.
Marty: I'm sorry, Doc, it's all my fault you're stuck back there. I never should've let Biff get to me.
Doc: There are plenty worse places to be than the Old West. I could've ended up in the Dark Ages. They probably would've burned me at the stake as a heretic or something. Let's look at the map. It says here the time vehicle is buried here in a side tunnel. We may have to blast.
NOVEMBER 14, 1955
Cut to Boot Hill Cemetery. An old mineshaft, just like 1985 Doc in 1885 mentioned in his letter, can be seen. Nearby are a few tombstones. Dynamite blows and Marty, Doc and Copernicus, safely hidden away, cover their ears.
Marty: Whoa. I think you woke up the dead with that blast.
Doc: Take this camera. I want to document everything!
Inside, Marty and Doc try to find the DeLorean.
Doc: This reminds me of the time I attempted to reach the centre of the earth. I'd be reading my favorite author, Jules Verne. I spent weeks preparing for the expedition, I didn't even get this far. Of course, I was only 12 at the time. It was the writings of Jules Verne that had a profound effect on my life. I was 11 when I first read "20,000 Leagues Under the Sea." That's when I realised that I must devote my life into science.
Marty notices a little alcove. It's covered with wooden planks, one of which has the letters ELB marked on it.
Marty: Doc...check it out...look at this.
Doc: My initials - just like in "Journey To The Center of the Earth"! That means the time machine must be right through this wall.
Doc and Marty chop through the planks and rocks. They get through and see the DeLorean, covered in a sheet. Doc sighs with astonishment.
Doc: It's been buried here for 70 years, 2 months, and 13 days. Astounding.
Later, Marty and Doc are repairing the time machine. Marty is reading 1985 Doc in 1885's instructions. Doc stares at some parts through a magnifying glass.
Marty: "...As you can see, the lightning bolt shorted out the time circuit control microchip. The attached sh...sh..."
Doc: Schematic.
Marty: "...schematic diagram will allow you to build a replacement unit with the 1955 components, thus restoring the time machine to perfect working order."
Doc: Unbelievable, that his piece of junk could be such a big problem. No wonder this circuit failed - it says, "Made in Japan."
Marty: What do you mean, Doc? All the best stuff is made in Japan.