diff --git a/doc/discovery_functions.md b/doc/discovery_functions.md
index dab630b..356ddd3 100644
--- a/doc/discovery_functions.md
+++ b/doc/discovery_functions.md
@@ -327,9 +327,12 @@ timespan_id | Text | The ID of the timespan
 timespan_name | Text | A human readable name for the timespan
 timespan_description | Text | Ignored
 timespan_weight | Numeric | Ignored
+timespan_aggregate | Text | Ignored
 timespan_license | Text | Ignored
 timespan_source | Text | Ignored
-timespan_aggregate | Text | Ignored
+timespan_type | Text | Ignored
+timespan_extra | JSONB | Ignored
+timespan_tags | JSONB | Ignored
 valid_numer | Boolean | True if the `numer_id` argument is a valid numerator for this timespan, False otherwise
 valid_denom | Boolean | True if the `timespan` argument is a valid timespan for this timespan, False otherwise
 valid_geom | Boolean | True if the `geom_id` argument is a valid geometry for this timespan, False otherwise
diff --git a/src/pg/sql/42_observatory_exploration.sql b/src/pg/sql/42_observatory_exploration.sql
index 3120c6a..4920167 100644
--- a/src/pg/sql/42_observatory_exploration.sql
+++ b/src/pg/sql/42_observatory_exploration.sql
@@ -252,6 +252,9 @@ CREATE OR REPLACE FUNCTION cdb_observatory.OBS_GetAvailableGeometries(
   geom_aggregate TEXT,
   geom_license TEXT,
   geom_source TEXT,
+  geom_type TEXT,
+  geom_extra JSONB,
+  geom_tags JSONB,
   valid_numer BOOLEAN,
   valid_denom BOOLEAN,
   valid_timespan BOOLEAN,
@@ -286,6 +289,9 @@ BEGIN
              NULL::TEXT geom_aggregate,
              NULL::TEXT license,
              NULL::TEXT source,
+             geom_type::TEXT,
+             geom_extra::JSONB,
+             geom_tags::JSONB,
       $1 = ANY(numers) valid_numer,
       $2 = ANY(denoms) valid_denom,
       $3 = ANY(timespans) valid_timespan
@@ -319,6 +325,9 @@ CREATE OR REPLACE FUNCTION cdb_observatory.OBS_GetAvailableTimespans(
   timespan_aggregate TEXT,
   timespan_license TEXT,
   timespan_source TEXT,
+  timespan_type TEXT,
+  timespan_extra JSONB,
+  timespan_tags JSONB,
   valid_numer BOOLEAN,
   valid_denom BOOLEAN,
   valid_geom BOOLEAN
@@ -343,8 +352,11 @@ BEGIN
            timespan_description::TEXT,
            timespan_weight::NUMERIC,
            NULL::TEXT timespan_aggregate,
-           NULL::TEXT license,
-           NULL::TEXT source,
+           NULL::TEXT timespan_license,
+           NULL::TEXT timespan_source,
+           NULL::TEXT timespan_type,
+           NULL::JSONB timespan_extra,
+           NULL::JSONB timespan_tags,
     $1 = ANY(numers) valid_numer,
     $2 = ANY(denoms) valid_denom,
     $3 = ANY(geoms) valid_geom_id
diff --git a/src/pg/test/expected/42_observatory_exploration_test.out b/src/pg/test/expected/42_observatory_exploration_test.out
index 7b18c5a..31bdf95 100644
--- a/src/pg/test/expected/42_observatory_exploration_test.out
+++ b/src/pg/test/expected/42_observatory_exploration_test.out
@@ -120,6 +120,9 @@ t
 _obs_getavailablegeometries_bg_not_1996
 t
 (1 row)
+_obs_getavailablegeometries_has_boundary_tag
+t
+(1 row)
 _obs_getavailabletimespans_2010_2014_in_all
 t
 (1 row)
diff --git a/src/pg/test/sql/42_observatory_exploration_test.sql b/src/pg/test/sql/42_observatory_exploration_test.sql
index f3ca14b..1f08e00 100644
--- a/src/pg/test/sql/42_observatory_exploration_test.sql
+++ b/src/pg/test/sql/42_observatory_exploration_test.sql
@@ -289,6 +289,11 @@ FROM cdb_observatory.OBS_GetAvailableGeometries(
 ) WHERE valid_timespan = True)
 AS _obs_getavailablegeometries_bg_not_1996;
 
+SELECT 'subsection/tags.boundary' IN (SELECT (Jsonb_Each(geom_tags)).key
+FROM cdb_observatory.OBS_GetAvailableGeometries(
+  ST_SetSRID(ST_MakePoint(-73.9, 40.7), 4326)
+)) AS _obs_getavailablegeometries_has_boundary_tag;
+
 --
 -- OBS_GetAvailableTimespans tests
 --