Vulcan's Thumb

{{short description|Mountain in British Columbia, Canada}}

{{Infobox mountain

| name = Vulcan's Thumb

| photo = Vulcan's Thumb.jpg

| photo_caption =

| map = British Columbia

| map_caption = Location in British Columbia

| elevation_m = 2290

| elevation_ref =

| prominence =

| location = British Columbia, Canada

| district = New Westminster Land District

| range = Pacific Ranges

| coordinates = {{coord|50|06|41.06|N|123|17|40.22|W|type:mountain_region:CA}}

| topo_maker = NTS

| topo_map = {{Canada NTS Map Sheet|92|J|3}}

| type = Pinnacle

| volcanic_arc/belt = Canadian Cascade Arc
Garibaldi Volcanic Belt

| age = Pleistocene

| last_eruption =

| first_ascent = None

| easiest_route =

}}

The Vulcan's Thumb is a rock pinnacle in the Pacific Ranges of southwestern British Columbia, Canada. It is the largest of a number of slender pinnacles protruding from the sharp summit ridge of Pyroclastic Peak, which forms part of the Mount Cayley massif.Kelman, M. C., Russell, J. K., Hickson, C. J. (2001). "Preliminary petrography and chemistry of the Mount Cayley volcanic field, British Columbia", Current Research Part A, Geological Survey of Canada Paper 2001-A11, pp. 4, 5.

Three eruptive stages built the Mount Cayley massif, the second of which is named after the Vulcan's Thumb.