Mt. Quesogrande is the third, and currently final, location in Plants vs. Zombies 3. Three plants are unlocked here, Chili Bean, Silversword, and Cabbage-Pult, and three new zombies encountered here, Rock-N-Rollin' Imp, Bowling Zombie, and Gargantuar.
It takes place on top of the volcano and on the lawn, there are lava puddles in the background of the field. A nacho stand and a hot tub with rubber ducks is present between the player's camping trunk.
This area also features a "Volcano Eruption!" surprise attack, wherein several falling rocks will descend from the sky and land on certain tiles, leaving behind a crater which prevents the tiles from being planted on. These craters will disappear after 15 seconds, and plants occupying targeted tiles will be instantly destroyed. An "Elevation" mechanic is also featured, which acts like the slopes in Roof levels from the first game, which appear starts in Level 41. However, from Level 42 onwards, the elevation mechanic can switch side as well. Just like its incarnation, Cabbage-pult or any other lobbing-shot plants are required here. Note that this mechanic also can speed up or slow down zombies as well, depending on their positions. Rock-N-Rollin' Imp was the main example, where he slows down when he hikes the slope located at the right side of the lawn.