We‘re wanting to go out camping tonight, but the temperatures are supposed to drop down to abut 27F just before sunrise (it‘s about 52F now at 4pm). Our sleeping bags are only rated for 40F, but could we add some extra blankets and keep the fire with some hot coals and sleep comfortably?
heck ya! take a comforter or 2 and use the other person for body warmth and wear some heavier pajamas and you will be fine. if you get too cold go sit near the fire for a bit and then go back to bed no worries
Depends what kind of rocks ocean rock, tufa rock will.