The tunnel mouth hole "𝑴𝒊𝒕𝒕𝒆𝒍 𝑺𝒕𝒐𝒍𝒍𝒆𝒏" was created before 1662, in that year it had a length of 30 puddles (approx. 60 m) and was named "Tiefer Stollen", because today's …
𝑻𝒊𝒆𝒇𝒆𝒓 𝑺𝒕𝒐𝒍𝒍𝒆𝒏: started around 1775, mentioned again in 1855. Length 69 m, never reached the mining area and could not contribute to the water solution. The mouth hole is still preserved, but piped up and lies on the Cleeberger district.