An escape in the desert

The wind raged across the desert. Dust devils rose, growing larger as they spun across the sand. A youth lifted his hand to shield his face from the sun. "The storm is coming closer." He muttered, then turned to look at his companion. "Are you sure this is the way?"
His companion paused and tilted back her head. She closed her eyes and breathed in the hot, dry air. "It has to be." She replied after a moment. "Now come on, we can't afford to rest." The girl began walking. Glancing back at the dark clouds in the distance, the boy shuddered. "Tairos." The name came out as the faintest of whispers. The dark clouds of the storm lit with a sickening orange hue as its pace suddenly increased. Hurriedly, the boy followed after his companion.
The girl led the way. They darted left, right, even back the way they had come as the girl followed a trail invisible to the boy. All the while, the storm drew closer.
 "Where is it?" The boy had to shout as the wind roared around them. The girl looked left, right, then back to the left. Hands tightening into fists, the girl knelt and hit the ground. The boy's eyes darted from the girl to the storm. It was nearly upon them. They had run out of time.
"Terry!" The girl called, voice tinged with excitement. The boy turned at the sound of his name. Focusing on the girl, he saw that the sand under her hands was shifting. After a couple of minutes, a circular silver cover was revealed. "Help me lift it." The girl said as she grabbed hold of the handle in the center of the cover. Terry took hold of part of the handle. Straining, they were able to lift it off. As they dropped the cover in the sand, they were able to see what had been under it.
A gaping hole. No ladder to climb down, nothing but darkness.
"You're first." The girl said, giving Terry a gentle shove.
"But Rose-"
"No buts! I'm the eldest, and I say you go first." She interrupted, crossing her arms with a glare. "We don't have time to argue. It's safer than being caught in the storm."
Chin trembling, Terry walked to the edge of the hole. With a gulp, he jumped. Hitting the ground, he looked up at the hole. It was out of his reach. The chill darkness surrounded him as he called up. "Okay, your turn!"
Rose came into view. But she didn't jump down. "Come on, the drop isn't that far!" He said as he moved out of the way.
Rose shook her head. "I'm sorry."
Terry saw her kneel and touch the edge of the hole. Sand began to trickle down, and slowly the edge of the cover appeared. "No!" Terry shouted as he realized what she was doing.
"Only one of us needs to escape." Rose said, a tremble in her voice as she forced a smile. "Besides, we both know that Dad is more interested in capturing me. You'll be safe here. Just follow the bat."
Terry shook his head, hands clenched at his side. "You promised we'd escape together!"
"Find uncle Lutez. He can explain everything." Rose called down. Then the cover fell back into place, and Terry was left in the dark.