714144ed_Lost_Isle___Zelda_Dungeon_Wiki__Description
[Item/ Destination] Small Key #1 [Description] 
From the beginning; head right two screens, and jump into the eastern hole to go back at the Dark Side. Head right (open the chest for recovery heart), up twice, right, left, down, left, up, and hit the switch there. From here; head down, right, down, left twice, and jump into the western hole to return to the Light Side. Head up a screen, and bomb the north-western wall to uncover a door. Head up two screens, and hit the switch there. Head down, left, and slash the bushes there to uncover hidden switch. Step on it to activate the blue portal there (you can step on the green portal there to fight some Zols that always drop magic decanter). Step on the blue portal, and you'll be warped to the unreachable part of Light Side in the north. Head left, down, and kill the Manhandla there with bomb (drop the bomb from it right side). Make your way back to the previous portal, and step on it to return to previous room. Head right, up, and hit the switch to lower the red block. Return to the screen with Manhandla, and head up a screen. Open the chest for Small Key, return down, and slash the bush there to uncover a portal. Step on it to return at the beginning.
Lost Isle - Zelda Dungeon Wiki
Description