The inscription that tells about the various achievements of Rudradaman I is Junagarh.

Junagarh Inscription:
The Junagarh inscription is an important source of information about the Western Satraps, especially Rudradaman I. The inscription was found in 1957 in Junagarh, Gujarat. The inscription is written in Sanskrit and Brahmi script.

Achievements of Rudradaman I:
Rudradaman I was a prominent ruler of the Western Satraps who ruled from 130 CE to 150 CE. He is known for his military conquests and patronage of arts and literature. The Junagarh inscription lists the following achievements of Rudradaman I:

1. Military Conquests: Rudradaman I is known for his military conquests, especially his victory over the Satavahanas. The inscription mentions that he defeated the Satavahanas and annexed their territory up to the Krishna river.

2. Construction of Buildings: Rudradaman I is credited with the construction of many buildings and monuments. The inscription mentions the construction of a dam on the Sudarshana lake, which helped in irrigation and agriculture.

3. Patronage of Arts: Rudradaman I was a patron of arts and literature. The inscription mentions that he supported many poets and scholars, including the famous poet Vasudeva.

4. Religious Tolerance: Rudradaman I was known for his religious tolerance. The inscription mentions that he donated land and money to various religious institutions, including Buddhist and Brahminical temples.

The Junagarh inscription is an important source of information about Rudradaman I and the Western Satraps. It provides valuable insights into the political, social, and cultural life of ancient India.