having problems with my shadows here are some screenshots

here are good shadows which im happy with



here is when i turned around the corner of the large block in picture 1 you can see how dark it gets after the first shadow



this is me in the shadow on the second picture




i have tried everything i can think of by changing options in the build menu, lightmap gamma and other such things, i can get all other shadows to be less darker but the shadow in the last picture always stays pitch black