After a while of going through Strongweave Grassland to find everything, which included gems and Stones of Power, the two came across a small tree trunk that leads underground. That trunk also had a small hole.
"Looks like this spot is for you Sparx." Spyro said. "Think you're up to it?"
"Bzzz, bz bzz bz bz! (Yeah, I can do it!)" Sparx said. He flew into the hole and made his way underground.
Sparx soon made it to the bottom of the hole, which lead him to a small underground nest full of locusts. He remembered similar situations where he went to smaller places while up against The Sorceress. Things shouldn't be that different.
He flew through the underground nest, blasting several locusts, using powerups from colored butterflies along the way. He also had to collect some keys to open certain colored doors.
When he made it to the end of the nest, Sparx met the boss of the nest, a giant mother locust. It attacked by shooting several smaller locusts at him, but he dodged and shot as the mother locust. He did that for a few minutes, gradually taking the mother locust down until it was defeated.
As the mother locust disappeared, it left behind a Stone of Power. Sparx grabbed it and flew out of the nest.
Sparx flew out of the hole and gave Spyro the Stone of Power.
"Nice job buddy!" He said.
"Bz bzzzzzz! (No problem!)" Sparx replied.
After that, knowing they collected everything in Strongweave Grassland, they started heading to the lift to bring them close to Klyn's castle.