Enter the trail, and Midna spots a spirit atop a large chain mesh wall. She reckons the way forward is impassable, but step onto the shallow rock ramp on the right side of the area, then leap up twice to the trail itself.
Jump up, switch your sense view on, and listen to the large, orange Goron speak about the troubles between the villagers and his tribe. It looks like they need to co-exist peacefully. Run past the three rocks (you can nudge them if you wish), heading north. You encounter three Twilit Vermin. Defeat them before continuing; spin attacks work well.
Follow the trail as it winds northward, until you reach a long right-turning bend, where you must engage a couple of Twilit Keese in combat. Then use the scenery and climb up and over the second mesh wall. Continue north until you reach a series of steam vents and a wider clearing. Climb up the long step to the upper area and dodge between the vents, or you’ll take slight damage and get knocked back.
Now search for the next Twilit Parasite. He’s under the ground in this plateau area. Dig to free him, using your sense view constantly, and then grab him and collect those tears, all the while avoiding the scalding vents.