Context Summary
Revelation 6:12–17 continues the episode of Jesus’ opening of the seven seals of God’s judgment. The first four opened seals brought devastation at the hands of four horsemen. The fifth opened seal revealed a company of martyrs under the altar in heaven. This sixth opened seal launches horrific terrestrial and celestial disturbances that cause earth’s mighty men to hide among the rocks of the mountains. These men call upon rocks to fall on them, hiding from the face of God and from the wrath of the Lamb. They know the day of the wrath of God and the Lamb has arrived.

For a more detailed summary select the link below.

“Revelation 6:17” Bibleref.com

What does Revelation 6:17 mean? | BibleRef.com

Revelation 6:17

¹⁶ They told the mountains and the rocks, “Fall on us, and hide us from the face of him who sits on the throne, and from the wrath of the Lamb, ¹⁷ for the great day of his wrath has come; and who is able to stand?”