Pink Dimension

"Lion's Dimension" is a pocket dimension that is accessible only to Steven (or bearers of the Rose Quartz gem) through Lion's mane. It first appears in "Lion 3: Straight to Video".

Appearance
Lion's Dimension is a vast pink savannah that stretches to a tall pink acacia tree atop a grassy hill. Beneath and within the tree are Rose Quartz's most treasured items. The actual size is unknown.

Contents
This area houses some of Rose Quartz's coveted mementos, including a VHS tape for Steven, an unknown bubbled object, a treasure chest, a damaged flag with her symbol on it, a photo of Greg and Rose, and an XXL Mr. Universe Shirt.

Steven now stores many of his own possessions inside the dimension, including his bike and helmet, a magician's hat, a long line of handkerchiefs, and a soda (as seen in the episode "Rose's Scabbard"). As of that episode, the battle flag is no longer in this dimension and is instead kept by Pearl.

There is no oxygen in Lion's Dimension, which meant that Steven had to hold his breath while he was inside. Because pure Gems have no need to breathe, Rose would not experience any trouble inside this pocket dimension; Steven, being a Gem/human hybrid, had a harder time due to the lack of air.

Trivia

 * The dimension cannot be exited while on the hill, as none of the tall grass grows on it.
 * As the grass seems to resemble Lion's fur, it's likely that the grass is in fact fur. This reinforces the fact that the dimension is only accessible through Lion's mane.
 * The dimension in Lion's mane somewhat resembles the Moon from The Legend of Zelda: Majora's Mask, as both have a seemingly endless field with a single tree in the center. This is likely intentional, as Rebecca Sugar stated in an interview that The Legend of Zelda: Ocarina of Time is one of her favorite games.
 * Steven entered the dimension in "Cry for Help" to make space for the Gems while they were riding Lion.
 * Rose seemed to have left what she wanted Steven to see here, especially the VHS tape.
 * Despite there being no breathable air in Lion's Dimension, a breeze appears to be constantly blowing.
 * The concept of there being no oxygen reinforces the idea that Gems do not need to breathe.
 * In a deleted scene of "Cry for Help", Steven pulls snacks out of Lion's mane.
 * Objects from Lion's Mane can also be summoned through Lion's forehead, as seen in "Lion 2: the Movie" when Steven pulled out Rose's Sword from it.
 * A bubble object was on the tree in the dimension could it be a gem or a gem weapon