Senjojiki vs Oni no Sentakuita

Hi everyone,

I have been to Oni no Sentakuita in Aoshima, Miyazaki in a previous trip and we were awe by the nature of the devil's washboard!

We are planning a trip to Wakayama in Sep/Oct and Senjojiki in Shirahama came up in our research. We are wondering if its worth seeing it given that we have seen something similar in Aoshima. Or is it something totally different?

Deeply appreciate if anyone who has been to both to provide some comparisons!

regards,
Weiming