False 1623-136c 136c is slot next to Schistock-Absturzschacht, and clearly connects to 136d.

136c is 28m N of 136a U S 1790m 82252 36371 p136c p136c VSK: 233°, Hollweiser: 145° (from a point between the WK7-WK10 entrances) smkridge/161/136c.htm