Secrets in Mt Peril Easy

[Regul@rGn0me]

Hi,

I found only 11 secrets in MM2 Mt Peril Easy (in rooms 15695, 15699, 15905, 16099, 16101, 16299, 16303, 16498, 16698, 17298 and 17300).
Can anybody tell me where is the last one ?

Thanks for your help.