i need help with displacement baking

Hi , hope everyone is having a good weekend :)


so im sculpting a cliff .. and i reached a really high amount of ver

i want to know if i can bake the displacement ? and if i can do so can anyone tell me how or put a link to a good tutorial ? 

ive searched a lot and ive seen alexandrov for the micro displacement , but i feel it kkinda different it didnt worked well for me , everytime i bake the displacement it become too gray that doesnt contain any details ..


please help thank you :)