Tumladen (Beleriand), The New Notion Club Archives

Tumladen (S. "The Wide Valley") was the hidden vale in the Echoriad in the midst of which stood the City of Gondolin. Read Sil 115. 125.134.158.182.239-40.243.

Gerwald Rockenschaub, Doing the Same Again

Tum-i-Theryn, The New Notion Club Archives

PDF) The Silmarillion - Illustrated edition

Vol. 22 Kiddushin - Large – Koren Publishers