Mario's Tunnel of Doom

Mario's Tunnel of Doom Mario presenting his Tunnel of Doom in Halloween 2014: Mario's Tunnel of Doom (Very Scary) Type Cave Owner Mario Heavy (Former Owner) Address Unknown Background information First appearence Halloween 2014: Mario's Tunnel of Doom (Very Scary) Mario's Tunnel of Doom (Formerly Heavy Tunnel of Sandvich) is the cave created by Mario. This tunnel is scary and doomy. "What the f*ck is that?!" This article is a stub. You can help OnyxKing Wiki by expanding it. v - e - d OnyxKing67 location Towns and Cities Chaos City • Clock Town • Mushroom Kingdom • New Donk City • Raccoon City • Sass Kingdom • The Hidden Sewer Village Residences Dave's Residence • Geofcraze634's Residence • Isabelle's Residence • Mario Bros Residence • Master and Crazy Hand Residence • OnyxKing67's Residence • Wario Bros Residence • Witch's Residence Mansions Ashley's Mansion • Bowser's Castle • Luigi's Mansion • Peach's Castle • Waluigi's Mansion Public Buildings and Areas Canvocer Toadstool Airport • Church of Miyamoto • Here School • Kaigawa High School • Mushroom Kingdom DMV • Mushroom Kingdom National Bank • Mushroom Museum • Padoru Therapy Shops and Businesses Best Buy • Chica's Motorcycle Shop • Club Shy Guy • CostCo • Cub Foods • Dollar General • Fazbear's Fright • Freddy Fazbear's Pizzaria • Grand Opening Bank • Hotel Whoop, Whoop! • IHOP • Nook's Cranny • McDonalds • Onyx Gym • Party City • PetSmart • Pizza Hut • Starbucks • Waffle House Other Bob-Omb Battlefield • Brazil • Bowser's Lair • China • Joey Drew Studios • Joy Factory • Mario's Tunnel of Doom • Palutena's Temple • Police Graveyard • The Backrooms • The Old XP