Just thought I would post some details on getting to Peking Man site
on public transport, as there wasn't anywhere that had a full run down when I was looking:
You will need bus 917
Busses leave regularly (every 10/15 minutes) from Tianqiao Bus station (天桥)
It isn't really a bus station it is just some bus stops on Beiwei Road, near the western gate to Temple of Heaven Park.
The precise stop is here
(on map view, for some reason the satellite image is slightly out of synch)
There are a few bus stops with 917 on them but it is the one with just 917 no Chinese character after it that you are looking for.
The bus stop you are aiming to get off at is called 周口村路口
(Perhaps it is called Zhoukoudian Town Hall in translation, as that is where you are let off, but I am not sure about it's actual name) It is located here
It is about 1.5 – 2.25 hours on the bus depending on traffic. It goes on the highway for a long time, then pulls of and goes around little suburban towns. Zhoukoudian is where the mountains start to get really close, so keep an eye out the window and if the mountains are still a long way off you can have a doze.
Showing the conductor the name of the stop I needed ensured I paid the correct price (9 yuan) and also meant she, and the rest of the bus, could tell me where to get off.
From this bus stop you can wait for the small shuttle bus #38
to take you to the site
proper, or it is about a 2km/ 20 minute walk
. If you decide to walk just carry on the main road in the direction you have come from. The road bends to the right, goes straight and then bends to the left. The site is then just the other side of the little 'Olympic' square and railway tracks, though it should be obvious by this stage.
To get back it is just the same but in reverse. There was a taxi waiting outside that took me to the 917 bus stop (10 yuan, probably could be battered down, but the price was fine for me).
The 917 was a really regular bus. If one turns up that is full it is probably worth waiting for the next one so you don't have to stand for 2 hours. Though it is worth noting the service stops about 4-5pm so later in the day it may just be worth taking whatever comes.
The whole visit took me about 4.5 hours from my hotel which was near Tianqiao station.
It was a tiny adventure doing this under my own steam and people were so friendly to me it really made the trip worthwhile. So if you are in Beijing with some time to spare it is probably worth doing!