What is "zelzal"

Zelzal (, meaning "Earthquake") is a series of artillery rockets developed by Iran. The series consists of:

• Zelzal-1, with an estimated range of
• Zelzal-2, with an estimated range of
• Zelzal-3, with an estimated range of

These rockets were developed by Hassan Tehrani Moghaddam, after he developed the Shahab-1 and the Shahab-2.