You can enter the mastabas, but be prepared for a crawl and carry a flashlight. There are two open mastabas at Maidum, but they are quite similiar and bereft of decoration at this point, so we only went into one.
Actually, considering the effort it took to get into the one, we passed on the other. Don’t be fooled by the “there wasn’t anything interesting to see” argument…it was purely to avoid the tunnels, trust me!
As mentioned before, I’m not a small person and it took a bit of pushing and pulling to get me through some of these small holes and over the planks inside. . Fateh started to lead us in, got about ten steps down the steeply sloped tunnel, and made us all back out because he “will not fit!”. We kept on with the help of the attendant in the tomb.
The tunnels are a little over a meter in places, meaning that we had to bend in half to creep through the space, and in some places we had to lay down and shimmy headfirst into a hole. Mark was honestly better at this that I was, and carried the camera without incident while I ended up covered in dust and whacking my head a half-dozen times.