i have stayed stayed at both ,allagash has decent sites ,hookups .they had good facilities,last i was there.we put a 28ft tow behind,good road in.frost is good too,with good people running it !!! only one way in though thats from the south now they blocked the northern entrance. come across rip dam instead. ..............harringtonwell is just a river now ,when they let the dam go. paper company did not want to maintain it.its sad use too be real nice salmon.but thats not the only dam either,many others.frost has some pretty good brookie and splake fishing ,and its general law ,you are allowed to dunk worms!!!!!!!!!!!