Sounds like fun! its been way too long since ive been there..i need to plan a road trip!
Well i wish you the best of luck! yes, going there at night is a no-no..but thats because police will arrest you for tresspassing..thats federally controled land. Digi cams and mics are a great way to start your adventure into the paranormal, but be warned, this field isnt always 'fun and interesting'..if you upset the wrong energy, you can put yourself in a dangerous situation. Protect yourself and your sister! definately announce yourselves and intentions and (as i have done before) give some sort of offering as compensation.apples or little toys, nothing too big...but they appreciate the recognition.
Youll never be able to control who or what your communicating with, and dicernment of spiritual beings is excruciatingly hard, being negative to this plane can hide behind innocent veils..but have sinister intentions.Ask general questions, something that can be answered easily.If activity heightens, get more specific..at that point your energies are intermingling..Its really all about your openness and availability to the spiritual realm...