SELECT "Mountain Range" FROM table_52709 WHERE "Location" = '37.3934°n 104.9201°w'
What is the mountain range at 37.3934 n 104.9201 w?
CREATE TABLE table_52709 (
    "Rank" real,
    "Mountain Peak" text,
    "State" text,
    "Mountain Range" text,
    "Location" text
)