I've been there twice,dude! First time was 1993,caught 8 or 9 cuttys from 14-16" all on a brown trout bouyant.Beautiful hook jawed fish!Missed many.Second time was 2003,saw several cutts but no bites, several follows on lures. The only way Ive gone is up the burning bear trail,starts at 9700' and the lake is right at 13,000'.Basically 8-9 miles with the last 2-3 no trail,lots of bouldering,then scrambling up 45 degree rock to arrive.Its one the toughest but neatest hikes I've done to get to a fishing lake.On leaving the lake I circle around to the south and traverse the cliffs ending up on the south side of Mt. Bierstadt.Then a nice steep stroll through the pines brings you back to the Abyss lake trail,then to the intersection of scott gomer and burning bear.It takes me 3-3.5 hrs one way wearing a large backpack. Both trips were in august and the lake was open.I,ve fished Abyss 3 times and there are nice fish in there also.You will see people at Abyss,you will be ALONE at Frozen!If ya want some company,maybe I'll tag along!Later-